TRƯỜNG THCS TRƯỜNG YÊN

ĐỀ CƯƠNG ÔN TẬP TẠI NHÀ DÀNH CHO HỌC SINH KHỐI 8 TRONG THỜIGIAN NGHỈ PHÒNG CHỐNG BỆNH VIÊM ĐƯỜNG HÔ HẤP CẤP DO CHỦNG

MỚI CỦA VIRUT CORONA

MÔN TOÁN (Bài làm ra giấy khi nào đi học nộp cho GV bộ môn để chấm lấy điểm)Câu 1 Phân tích các đa thức sau thành nhân tử: a) 3x3 – 6x2 + 3x b) x(x + y) – 5x – 5yc) 23 3x xy . d) 2 24 2 1x y x .

Câu 2 a) Thực hiện phép chia (6x3 – 7x2 – x + 2) : (2x + 1) b) Tìm a để đa thức 2x3 – x2 + 4x + a chia hết cho đa thức x + 2

Câu 3. Thực hiện các phép tính sau.

a)2 - 3 5 + 3

+7 7

x x. b) 2

4 5 3

5 5

x

x x x

.

Câu 4

Cho biểu thức: A = 2

2

2 x 4x 2 x

2 x x 4 2 x

a) Tìm điều kiện xác định rồi rút gọn biểu thức A.b) Tìm x để A = - 3Câu 5. Giải phương trình

a/5 2 5 3

13 2

x xx

b/ (x +2)(3 – 4x) = x2 + 4x + 4

c) 2011x(5x 1)(4x 30) 0 d) x x 2x

2x 6 2x 2 (x 3)(x 1)

e, 5 3 1x x

Câu 6 Cho tam giác ABC vuông tại A. Điểm D trên cạnh BC, vẽ DM vuông góc với AB

tại M, DN vuông góc với AC tại N.a) Tứ giác AMDN là hình gì? Vì Sao? Tính diện tích tứ giác AMDN biết AM = 3cm, AD = 5cm.b) Gọi AH là đường cao của tam giác ABC. Tính góc MHN.c) Khi điểm D di chuyển trên cạnh BC thì trung điểm I của MN di chuyển trên đoạnthẳng nào?Câu 7 . Tìm giá trị nhỏ nhất của biểu thức sau:

A = 2x2 – 4x + 2xy + y2 + 2023

MÔN NGỮ VĂN- Hoàn thành sản phẩm HĐTN ST “Danh thắng Việt Nam” - Viết bài giới thiệu về một danh lam thắng cảnh ở quê hương em. (Bài làm ra giấy

khi nào đi học nộp cho GV bộ môn để chấm lấy điểm)

MÔN TIẾNG ANH - Các em ôn lại và học thuộc phần ngữ pháp và mẫu câu. - Làm bài tập in trong đề. - Bài viết ra giấy nộp cho GV để chấm điểm khi đi học .

EXERCISES PREPARING FOR THE SECOND EXAMPART I : GRAMMAR POINTS

A . TENSES1/ Simple present tense : (Thì hiện tại đơn)

@ Đối với động từ Tobe : (+) S + is/am/are + ……(-) S + is/am/are + not + ……(?) Is/Am/Are + S + …… ?

@ Đối với động từ thường : (+) S + V(s-es) + ……(-) S + donot/doesnot + V + ……(?) Do/Does + S + V + …… ?

Một số từ đi kèm : often, usually, always, sometimes, never, every (day) 2/ Present progressive tense : (Thì hiện tại tiếp diễn) :

(+) S + is/am/are + V-ing + ……(-) S + is/am/are + not + V-ing + ……(?) Is/Am/Are + S + V-ing + …… ?

Một số từ đi kèm : now, at the moment, at present, look !, be careful ! listen !3/ Simple past tense : (Thì quá khứ đơn) :

@ Đổi với động từ Tobe : (+) S + was/were + ……(-) S + was/were + not + ……(?) Was/Were + S + …… ?

@ Đối với động từ thường : (+) S + V2 + ……(-) S + didnot + V + ……(?) Did + S + V + …… ?

Một số từ đi kèm : last, ago, yesterday 4/ Near future tense : (Thì tương lai gần) :

(+) S + is/am/are + going to + V…(-) S + is/am/are + not + going to + V…(?) Is/Am/Are + S + going to + V …?

Một số từ đi kèm : at a moment, tonight.5/ Simple future tense : (Thì tương lai đơn)

(+) S + will/shall + V … (-) S + will/shall + not + V… (?) Will/Shall + S + V …?

Một số từ đi kèm : tomorrow, next, soon6/ Present Perfect tense : (Thì hiện tại hoàn thành)

(+) S + have/has + V3 + … (-) S + have/has + not + V3 + … (?) Has/Have + S + V3 + … ?

Một số từ đi kèm : ever, never, just, already, yet, recently,recently, since, for, several times.7/ Past continuous : (Thì quá khứ tiếp diễn)

(+) S + was/were + V-ing + … (-) S + was/were + not + V-ing + … (?) Was/Were + S + V-ing + …?

Một số từ đi kèm : at that time, at this time, at time, between time and time. 8/ Mối quan hệ giữa thì hiện tại hoàn thành và thì quá khứ đơn thông qua liên từ since :

Nếu hai mệnh đề được nối với nhau bởi liên từ since thì mệnh đề since thường chia ở thì quá khứđơn, còn mệnh đề chính thường chia ở thì hiện tại hoàn thành.

Ex : Lan (learn) English since she (be) 3 years old. Lan has learnt English since she was 3 years old.

9/ Mối quan hệ giữa thì quá khứ tiếp diễn và thì quá khứ đơn thông qua liên từ when : Nếu hai mệnh đề được nối với nhau bởi liên từ when thì mệnh đề when thường chia ở thì quá khứ

đơn, còn mệnh đề chính thường chia ở thì quá khứ tiếp diễn. Ex : Lan (do) her homework when the phone (ring)

Lan was doing her homework when the phone rangB . PASSIVE FORM :

ACTIVE PASSIVESimple Present Tense S + V(s,es) + O S + is/am/are + V3 + (by O)Simple Past Tense S + V2 + O S + was/were + V3 + (by O)Present Continuous Tense S + is/am/are + V-ing + O S + is/am/are + being + V3 + (by O)Past Continuous Tense S + was/were + V-ing + O S + was/were + being + V3 + (by O)Present Perfect Tense S + have/has + V3 + O S + have/has + been + V3 + (by O)Near Future Tense S + is/am/are + going to + V + O S + is/am/are + going to + be + V3 + (by O)Simple Future Tense S + will/shall + V + O S + will/shall + be + V3 + (by O)Modal Verbs S + MV + V + O S + MV + be + V3 + (by O)C . REPORTED SPEECH : Coù caùc daïng sau :1/ Commands – requests : ( caâu meänh leänh – yeâu caàu)

S + asked/told + O + (not) to-infinitive + …2/ Advices : (lôøi khuyeân)

S1 + said/told + S2 + should + bare-infinitive + …3/ Yes – No questions : (caâu hoûi coù – khoâng)

S + asked + if/whether + S + V + …4/ Statements : (caâu traàn thuaät)

@ Moät soá thay ñoåi :

TRÖÏC TIEÁP GIAÙN TIEÁPSimple present Simple past

Present continuous Past continuousWill/shall Would/should

May MightCan CouldMust Had to

Mustn’t Was not to /were not toThis That

These ThoseHere ThereNow Then

Today That dayYesterday The day before (the previous day)Tomorrow The day after (the next day)

Ago BeforeNext week The following week (the week after)

D . THE PARTICIPLES :1/ Present participle : : V – ing 2/ Past participle : : V3 E . Request with WOULD YOU MIND… ? : Would you mind + V-ing … ?: Would you mind + if clause (past tense) … ?

Do you mind + if clause (present tense) … ? F . CAUSATIVE FORM : (Theå sai khieán)

S + have/has + O + bare-infinitive******************************************************************

PART II : EXERCISES

I . CHOOSE THE SUITABLE WORDS OR PHRASES TO FILL IN THE BLANKS .1. Cool the burns immediately so as to ……………………tissue damage. a. ease b. relieve c. minimize d. maximize2. The lane is ……………………Nguyen Trai Street and Tran Hung Dao Street. a. near b. between c. beside d. on3. …………………… you post this letter for me, please ? a. Will b. Do c. Are d. Won’t4. She promises she ……………………back in about half an hour. a . is b. be

c. has been d. will be5. …………………… I do the washing-up? – No, thanks. I can do it myself. a . Can b. Would

c. Shall d. Won’t 6. People use first-aid …………………… ease the victim’s pain and anxiety. a. so that b. in order to

c. so as not to d. in order that7. …………………… is used to check one’s eyesight. a. eye-shade b. eyeglass

c. eyepiece d. eye chart 8. Milk …………………… to the houses by the milkman every day.a. brings b. is bring c. is brought d. has brought9. We were delighted ……………………your letter last week.a. getting b. to get c. get d. got10. “Would you like to go to the movies tonight?” “I’m sorry, I can’t. I …………my homework this evening.” a. am doing b. do c. will do d. doing11. Milk bottes can be …………………… after being cleaned.a. Recycled b. Thrown away

c. Broken d. Reused12. This project ................................................ next month.a. is carried out b. will carry outc. carried out d. will be carried out13. It’s dangerous ……………………… in this river.

a. Swim b. To swimc. Swimming d. swam

14. We are looking forward to ............................... you in June. a. seeing b. see

c. saw d. Be seen15. The pyramid of cheops is one of the seven………………… of the world.

a. Pyramids b. Templesc. Landmarks d. Wonders

16. I can see a boy …………………… a water buffalo.a. Ride b. Riding

c. To ride d. Rode17. It’s …………………………… to travel around Vietnam.

a. Interesting b. Interestedc. Interestingly d. Interestedly

18. Would you mind……………………the windows.a. To close b. Closing

c. Close d. Closed20. ……………………………you mind if I smoke ?

a. Could b. Don’t c. Do d. Would

21. My sister likes sweets …………………………… from chocolatea. Making b. Made

c. To make d. Make22. This is the first time Sharnon ……………………… rice paddies.

a. Is seeing b. Sawc. See d. Has seen

24. They are good friends. They ……………………… each other for a long time.a. Know b. Have known

c. Knew d. Were knowing25. How about ……………………… to Thai Binh Market?

a. Going b. To go c. Went d. Gone

26. “What ……………………… in New York?”-“It’s very cold and humid.”a. The weather like b. Does the weather like

c. The weather is like d. Is the weather like27 . “………………… to come and have dinner with us?”-“I’d love to but I’m busy.”a. Do you want b. Would you like c. Would you mind d. Could you please28. Can you tell me where ……………………… ?a. She does b. Does she c. She is d. Is she29. I was reading ……………………… my sisters were playing with their dolls.

a. When b. Whilec. At which d. At time

31. Millions of Christmas cards ……………………… every year.a. Were sent b. Are sent

c. Sent d. Is sending

32. I take part ……………………… most youth activities of my school.a. Of b. On c. To d. In

33. Jane saw her old friend while she ……………………… the street.a. Crossed b. Is crossing c. Was crossing d. Crosses

34. He had his father ……………………… his watcha. Fixed b. Fixing c. To fix d. Fix

35. I saw him ……………………… the flowers in the garden.a. Watering b. Wateredc. Be watered d. Be watering

36. A contest in which participants have to fetch water from the river is calleda. Water-fetch contest b. Fetching-water contestc. Water-fetching contest d.Fetch-water contest37. The poem……………………… , became popular in the USA.

a. That is written by Clement Clarke Mooreb. Which is written by Clement Clarke Moorec. Which was written by Clement Clarke Moored. That was written by Clement Clarke Moore

38. Tom……………………… his hand when he was cooking the dingner.a. Burnt b. Was burning c. Has burnt d. Burn

39. She asked me ……………………… a driving licence.a. If I had b. Whether I have

c. If I has d. Whether I have has40. They has the potter ……………………… their luggage.

a. Carry b. Carrying c. To carry d. Carried41. He had his father.........his christmas cards. a.decorated b. decorating c. to decorate d. decorate42. They try to make a fire by...............pieces of bamboo together . a. adding b. separating

c. rubbing d. taking43. First prize was awarded................Jackie Stevens, the smallest girl on the team. a. with b. on

c.for d.to44. Do you mind...........me a hand with this bag a. give b. giving

c.to give d.to giving45. We have to get up early........late for class. a. so as to be b. so that not to be

c. in order not to be d. so as to not be46. We are all ..........that you passed your English exam. Congratulations! a. delighted b.relieved c.afraid d.certain 47. At 9 o’clock yesterday, we______________ on the beach.

a. are lying b. have lain c. lay d. were lying48. I must go now. I promised________________late

a. not to be b. not being c. to not be d. not be49. I take part____________most youth activities of my school

a. of b. on c. to d. in50. I would like_____to Africa.

a. to go b. go c. going d. to going51. Jane saw her old friend while she_______________the street.

a. was crossing b. is crossing c. crossed d. crosses52. She asked me___________________a driving license.

a. if I have b. whether I have c. if I had d. whether I has had53. I don't know how__________________the game.

a. to play b. playing c. played d. can I play54. While my father was reading newspapers, my mother______meal at 5pm. yesterday.

a. cooked b. cooks c. has cooked d. was cooking55. Could you please tell me how_____________a sticky rice cake?

a. to make b. is making c. make d. to be made56. I saw him__________________the flowers in the garden.

a. be watering b. watered c. be watered d. watering57. He used__________a football player. He had to stop_________because of an injury.

a. to be/ playing b. being/ playing c. to be/ to play d. be /playing58 . When the teacher comes in, the class stops __________and stands up.

a. to talk b. talking c. talk d. talks 59. Paul is said________________the brightest student in the class.

a. he was b. was c. being d. to be60. These houses ___________ 100 years ago.

a. are built b. built c. were built d. build61. In order to keep fit, we should do exercises____________

a. regularly b. regular c. regulating d. regulation62 . Would you like _____ for a drink?

a. go b.to go c. going d. went63. My friend told me what __________when I visited Hoi An.

a. do b. doing c.to do d. done 64. When I was a child, I _______ my ball through the window.

a. was always kicking b. always was kickingc. was kicking always d. kicked always

65. Ann ________ television when the phone rang.a. watches b. watched c. has watched d. was watching

II . CHANGE INTO PASSIVE FORM : People use milk for making butter and cheese.

____________________________________________________________________The milkman brings bottles of milk to house

____________________________________________________________________Careless driving causes many accidents.

_____________________________________ _____________________Weeds cover the river bank

____________________________________________________________________People speak English all over the world

____________________________________________________________________They don’t use this house very often.

___________________________________________________________________Do they teach French in this school?

___________________________________________________________________They make a lot of beautiful toys from recycled plastic.

___________________________________________________________________The workers clean the streets every day.

___________________________________________________________________Do they usually hold the concerts at the university?

____________________________________________________________________Somebody will clean the room later.

____________________________________________________________________You mustn’t open this parcel until Christmas Day.

____________________________________________________________________They can’t make tea with cold water.

____________________________________________________________________The students will hold a meeting before the Teachers’ Day.

________________________________________________________________People can recycle tires to make pipes or floor coverings.

______________________________________________________________They should send applications before December 30 th.

_______________________________________________________________The manager must sigs the contract today

_______________________________________________________________They will build the new bridge by the end of the year.

_______________________________________________________________We should use cloth bags instead of plastic bags

______________________________________________________________We can use the garbage to make fertilizer.

_______________________________________________________Somebody cleans the room every day

_____________________________________________________________How do people learn language?

________________________________________________________________John will collect me at the airport.

____________________________________________________________________Mr. Robinson teaches us how to speak English properly.

_____________________________________________________________Your teacher must sign this form.

_________________________________________________________________________People play football all over the worlds.

____________________________________________________________Our form teacher will hold a class discussion next Monday.

_____________________________________________________________Will you invite her to your birthday party?

____________________________________________________________We can’t wear jeans at work.

_______________________________________________________________Do they speak French and English in Canada?

_______________________________________________________________Does Egypt export cotton to many countries?

______________________________________________________________Somebody must do something for there poor men.

________________________________________________________________Did Jack London write the novel “Martin Idon”?

______________________________________________________________They have just built a new church near my house.

_________________________________________________________________People speak French and English in Canada.

_______________________________________________________________

Bell invented the telephone in 1876. _______________________________________________________________

They will laugh at you if you wear that silly hat. _________________________________________________________________

My grandfather built this house over 40 years ago. _________________________________________________________________

Clement Clarke Moore wrote the poem “A visit from Saint Nicholas”. ________________________________________________________________

They performed Christmas songs for people in town. ________________________________________________________________

Santa Claus gave children presents on Christmas Eve. ______________________________________________________________

My father decorated the Chistmas tree with colored lights. ______________________________________________________________

Miss Thanh taught me to draw the Christmas cards. _________________________________________________________________

Ba invited Liz to the rice-cooking festival. __________________________________________________________________

They held the festival in the communal house yard. ___________________________________________________________________

The council leader awarded the first prize to the Mekong team. ____________________________________________________________

@ PASSIVE ACTIVEThe Christmas trees were decorated and put at the front doors.

_________________________________________________________________________His painting will be exhibited for the first time by New Arts gallery.

_________________________________________________________________________French isn’t taught in this school.

_________________________________________________________________________Was this symphony written by Mozart?

_________________________________________________________________________A new supermarket is going to be built next year.

_________________________________________________________________________Most of the questions can be answered by Nam.

_________________________________________________________________________My camera was stolen from my hotel room a few days ago.

_________________________________________________________________________Alexandre Eiffel designed the Eiffel Tower for the Paris World’s Fair of 1889.

_________________________________________________________________________His painting will be exhibited for the first time by New Arts gallery.

_________________________________________________________________________People said that the Pyramids of Egypt is one of the wonders of the world.

_________________________________________________________________________They have to change the plan to Florida because of the rough weather.

_________________________________________________________________________He is being questioned about the stolen goods by the police.

_________________________________________________________________________Were you taught how to apply this theory by your teacher?

_________________________________________________________________________They usually hold the concerts at the university.

_________________________________________________________________________They have already finished their work as requested.

_________________________________________________________________________III . COMBINE EACH PAIR OF SENTENSES, USINGS PRESENT PATICIPLE (V + ING) OR PAST PARTICIPLE (V + ED).

The baby is crying for her mother. She is sitting in an armchair.o_________________________________________________________________________

The boy was taken to the hospital. He was injured in the accident.o_________________________________________________________________________

The road is very narrow. It joins the two villages .o_________________________________________________________________________

Do you know the woman? The woman is talking to Tom.o_________________________________________________________________________

The window has been repaired. It was broken last night.o_________________________________________________________________________

The taxi broke down. It was talking us to the airport.o_________________________________________________________________________

A bridge has been declared unsafe. It was built only two years ago.o_________________________________________________________________________

Most of the goods are exported. They are made in this factory.o_________________________________________________________________________

A new factory has just opened in the town. The factory employs 500 people.o_________________________________________________________________________

“Romeo and Juliet” is the best tragedy I have ever seen. It was writen by Shakespeare.o _________________________________________________________________________IV . FILL IN THE BLANKS WITH THE SUITABLE PREPOSITIONS. The girl fell ………………………… her bike and hit her head ………………………… the road. The policeman asked me to phone ………………………… an ambulance. You’d better put pressure…………………….the wound. The ambulance will be there about 10 minutes. Don’t overheat the victim ………………………… blankets or coats. How will we contact ………………………… you ? Will you come ………………………… to my house on the week Don’t throw things…………………………Try and find another use …………………………them We can look ……………………… information …………………… recycling things in the local library I’m looking forward ………………………… seeing you in June. (in/ with/ to/ on) Could I help you ………………………… your luggage? (with/ of/ on/ to) Would you mine sitting ………………………… the front seat of the taxi? (on/ at/ during/ in) Ha Long Bay is recognized ………………………… UNESCO as a World Heritage Site. (of/ by/ toward/ for)

John is interested ………………………… the history Vietnam. (in/ with/ to/ on) She is thinking ………………………… importing flowers from Vietnam. (in/ of/ for/ on) He realized his alarm clock didn’t go …………………………. (on/ of/ around/off) Everyone fell ………………………… the deep and dangerous water. (over/ in/ into/ out) You must come ………………………… for dinner one night. I’ll pick you ………………………… at the hotel 7 o’clock. This doll is made …………………………China. My mother is very keen ……………………… growing roses. John is extremely fond ……………………… music. Are they interested ……………………… a harvest festival? How many members participated ……………………… the rice-cooking contest? Santa Claus is based ……………………… the description of Saint Nicholas That’s very kind......................you to help me...........................this math problem. Minh works hard ...........................Monday...........................Friday. You can meet me..........................................7.15 and 8.00. I’ll leave.............................7 o’clock, so you should call me.............................7.00

V . REWRITE THESE SENTENCES, USING REPORTED SPEECH. Tom said, “I’m a student” ________________________________________________________________________ Nga said to her brother, “I can’t answer this question.” ________________________________________________________________________ Charles said, “I’m living in London now.” ________________________________________________________________________ He said to us, “You are my friends.” ________________________________________________________________________ Johnny said to me, “I don’t know what Fred is doing.” ________________________________________________________________________ She said, “I will answer the phone.” ________________________________________________________________________ He said to his friends, “I must go home now.” ________________________________________________________________________ Hoa said, “I can’t go out after 8 p.m.” ________________________________________________________________________ She said to me, “ I will come and see you as soon as I can.” ________________________________________________________________________ Judy said, “John wants to come here but he isn’t very well.” ________________________________________________________________________ Susan said, “My sister is coming to see me next week.” ________________________________________________________________________ Judy said to me, “I’m going away for afew days. I’ll phone you when I get back.”

________________________________________________________________________ Mary asked me. “ Do you want to visit london?” ________________________________________________________________________ She said, “Can you speak spanish, Minh?” ________________________________________________________________________ Thanh said to her teacher, “Will I finish my exercise at home? ________________________________________________________________________ Nien asked Hoa, “Do you have many new friends?” ________________________________________________________________________ My friend said, “Are you going to leave tomorrow? ________________________________________________________________________ They said to us, “Must you go now?” ________________________________________________________________________ I asked Nam, “ Are you free tonight?” ________________________________________________________________________ She asked the tourists, “Do you know the way the station?” ________________________________________________________________________ John said, “Is phong nha cave in southern vietnam,Nhi?” ________________________________________________________________________ Daniel said to Jim, “Is there a cafe nearby? ________________________________________________________________________ He said to me, “Don’t forget to post the letter.” ________________________________________________________________________ Nhi said, “I am visiting Hoi An now.” ________________________________________________________________________ Johnny said, “I don’t know how to do this exercise.” ________________________________________________________________________ She said, “I must stay at home tomorrow.” ________________________________________________________________________ Hoa asked Tim, “ Do you like this place?” ________________________________________________________________________ “I’m going to Paris next month,” the boy said. ________________________________________________________________________ “ I have something to show you,” I said to her. ________________________________________________________________________ “They are building a new hospital in the village,” said the Mayor. ________________________________________________________________________ “I don’t like cartoon,” Lan says. ________________________________________________________________________ “I’m not enjoying my job very much,” Ms Black said. ________________________________________________________________________ “My boss arrived late last night,” he said ________________________________________________________________________ “You shouldn’t stay up late,” he said. ________________________________________________________________________ Mary said: “I cannot go to the movie with you, John”

________________________________________________________________________ “Are you willing to work on Saturdays?” ________________________________________________________________________ “Why do you want the job?” She asked ________________________________________________________________________ He said, “What is happening? ________________________________________________________________________ “You shouldn’t drink too much coffee at night,” said Bob. ________________________________________________________________________ “Don’t be late for class again, Jim.”,The teacher asked ________________________________________________________________________ “Would you like to go out for dinner with us tonight?”,Mary invited ________________________________________________________________________ Mother said, “Don’t forget to water the flowers for me, Tom”. ________________________________________________________________________ “Don’t worry. I’ll help you with the money.”,He promised ________________________________________________________________________ He said, “I am writing a test tomorrow.” ________________________________________________________________________ You said, “I will do this for him.” ________________________________________________________________________ She said, “I am not hungry now.” ________________________________________________________________________ “I will apply for my visa tomorrow,” She said. ________________________________________________________________________ My teacher said “The sun rises in the East”. ________________________________________________________________________ He asked, “Do I have to do it?” ________________________________________________________________________ “Are you going to the cinema?” he asked me. ________________________________________________________________________VI . MAKE QUESTIONS FOR THE UNDERLINED WORDS.1) Two hundred people are employed by the company. _________________________________________________________________________2) Cheese and butter are made from milk. _________________________________________________________________________3) The result will be known next week. _________________________________________________________________________4) A milk bottle can be reused thirty times. _________________________________________________________________________5) The park gates are locked at 6.30 p.m. _________________________________________________________________________6) The applications should be sent to the main office. _________________________________________________________________________7) The room is cleaned every day. _________________________________________________________________________8) Silver is used for ornaments, jewellery and coins

_________________________________________________________________________9) Christmas songs were first performed eight hundred years ago. _________________________________________________________________________10) Santa Claus is based on the description of Saint Nicholas _________________________________________________________________________11) The Thon Trieu team won the grand prize. _________________________________________________________________________12) The English-speaking contest will be held at Le Loi school. _________________________________________________________________________13) We have been in London for five years. _________________________________________________________________________14) The poem “A visit from Saint Nicholas” was written by Clement Clarke Moore. _________________________________________________________________________15) There were three competitions in the Rice-cooking Festival _________________________________________________________________________16) I was listening to the music when you called me yesterday evening _________________________________________________________________________VII .COMPLETE THE SENTENSES, USE THE CORRECT FORM OR TENSE OF THE VERBS IN THE BRACKETS.1. The man (sit) next to me was very nervous. _________________________________________________________________________2. Tom doesn’t enjoy (laugh) at by otther people. _________________________________________________________________________3. I’d like you (meet) my mother. _________________________________________________________________________4. He suggested (travel) around the tows by bike. _________________________________________________________________________5. The flights to London will (delay) because of heavy rain. _________________________________________________________________________6. This is the first time Hoa (meet) Tim’s famaly. _________________________________________________________________________7. She has a lot of novels (write) in English. _________________________________________________________________________8. Your poem should (write) in English. _________________________________________________________________________9. Yesterday afternoon, my father (fix) his motorcycle while my mother (cook) dinner. _________________________________________________________________________10. It’s a serious problem. I don’t know how it can (solve). _________________________________________________________________________11. The teacher ordered Tom (go) to the blackboard. _________________________________________________________________________12. I learned to swim when I (be) very young. I (teach) by my mother. _________________________________________________________________________13. He said that his mother (not/be) very well, so he (can not) go to the party. _________________________________________________________________________14. When we (meet) George and Linda yesterday, we (walk) through the park. _________________________________________________________________________15. “What you (do) at eight o’clock last night?” - “We (watch) television.” _________________________________________________________________________

16. When we (be) young, our family (live) in the countryside. _________________________________________________________________________17. The doll (dress) in red is 5 dollars. _________________________________________________________________________18. Would you mind if I (smoke) ? _________________________________________________________________________19. The girl (stand) over there is Lan.

_________________________________________________________________________20. He is happy (help) you. _________________________________________________________________________21. Mrs Nga was cooking when Nam (come) _________________________________________________________________________22. I don’t know how (use) the sewing machine. _________________________________________________________________________23. When I’m tired, I enjoy (watch) TV. _________________________________________________________________________24. A new bike (buy) for me by my mother yesterday _________________________________________________________________________25. While I was cooking the dinner, my sister ( clean) the floor at 5 p.m yesterday. _________________________________________________________________________26. It started (rain) when they left home. _________________________________________________________________________27. He said he (be) a teacher. _________________________________________________________________________28. When she (come) , I was having lunch at 12 yesterday. _________________________________________________________________________29. Would you mind (close) the door ? _________________________________________________________________________30. The exercise (do) by me tonight. _________________________________________________________________________31. The kitchen foor (clean) by her everyday. _________________________________________________________________________32. It was late, so we decided (take) a taxi home. _________________________________________________________________________

VIII . COMPLETE THE SECOND SENTENCES SO THAT IT HAS THE SAME MEANING TO THE FIRST.

– We must pay the bill at once. The bill ___________________________________________________________

– Many people in the world speak English. English ___________________________________________________________

– This question is difficult to understand It’s ___________________________________________________________

– I will repair your bicycle tomorrow afternoon. Your bicycle ___________________________________________________________

– “Don’t throw things away,” Miss Linda said to the students. Miss Linda asked ___________________________________________________________

– Penicillin can cure many dangerous diseases.

Many ___________________________________________________________– Does your country export rice to Britain?

Is rice ___________________________________________________________ ?– Clement clarke moore wrote the poem in 1823.

The poem___________________________________________________________– Chirstmas cards should be sent a week befor christmas day.

You___________________________________________________________– “We are waiting for the school bus”, said the children.

The children said___________________________________________________________– Nobody has used this machine for years

This machine___________________________________________________________– They use recycled plastic to make toys

Recycled___________________________________________________________– She said to me, “turn off all the lights when you go out

She said ___________________________________________________________– The last time I played tennis was in 1990.

I haven’t___________________________________________________________– “ We are waiting for the school bus” said the children.

The children said___________________________________________________________– I asked Nam “Are you free tonight?”

I asked Nam___________________________________________________________– I would like you to help me move this table.

Do you mind ___________________________________________________________?– Mai keeps leaving her pen at home.

Mai is ___________________________________________________________– Air travel is faster than any other kinds of transport.

Air travel is the___________________________________________________________– It is a contest in which participants have to cook rice.

It is a rice-___________________________________________________________– Does your country export rice to Britain?

Is ___________________________________________________________?

IX . READ THE PASSAGE CAREFULLY, THEN DO EXERCISES

PARAGRAPH 1 Every day of the year throughout the world, about twenty million paper bags and newspaper are

screwed and thrown away.Making paper requires a lot of wood pulp and the word of million of workers. Many countries

have had plans to recycle waste paper to save money and labour. In countries where there is thecoopeation of the public, paper mills recycle as much as sixty percent of waste paper. Their simplework is to take away the ink, crush it up and make it into pulp again. For every ton of recyclednewsprint, twelve trees can be saved. We can insist that the more paper people save, the more treesare preserved.

ANSWER SOME QUESTIONS : How many paper bags and newspapers are throw away every day?

...........................................................................................................................................2. What material do paper mills need to make paper?

..........................................................................................................................................3. What have many countries done to save money and labour in making paper? ..........................................................................................................................................4. What percentage of waste paper is recycled with the help of the public? ........................................................................................................................................... 5. What do the paper mills do to reuse waste paper?...................................................................................................................................................6. How many trees can be saved for every ton of recycled newspringt? ..........................................................................................................................................

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

PARAGRAPH 2NHA TRANG

When people talk about Nha Trang, the biggest city in Khanh Hoa Province, they often think of atropical paradise. Nha Trang is a famous seaside resort. It has a long coastline with beautiful whitesandy beaches.In the morning and afternoon, tourists can take part in varius fascinating outdoor activities such asmud bathing, swinmming, snorkelinng or scuba diving. Snorkeling and scuba diving are bothinteresting sports, as swimming may swim underwater and admire the lives at the bottom of thesea. Besides, tourist can also take boat trips to the islands. One of the most enjoysble trips is thetrip to Mieu Island, where Tri Nguyen Aquarium was built in 1999. This aquarium is now home todifferent kinds of colorful fish and even a few sharks. In addition, tourist can spend an evening visiting a fishing village, where they could get a taste ofthe local seafood. There are crabs, shrimps, lobsters, clams, oysters, and several other kinds of fish– all are fresh and delicious. - tropical paradise: thieân ñöôøng nhieät ñôùi- mud bathing: taém buøn- snorkeling: moân bôi laën coù oáng thôû- oyster: con soø

*Choose the word or phrase that best completes each sentence1/ Nha Trang is

A . Famous for its fresh and delicious seafoodB . Located in khanh hoa provinceC . A paradiseD . Not a resort

2/ Tourist can take part in some outdorr activities such as A . Visiting nha trang pasteur InstituteB . Eating the local seafoodC . Visiting tri phuong AquariumD . Scuba diving

3/ At tri nguyen Aquarium, visitor can enjoy A . Watching a few sharks onlyB . A taste of the local seafoodC . Watching sharks and various kind of colorful fish D . Feeding the

fish4/ At a fishing village, tourist can

A . Get a taste of the local seafoodB . Catch the fish and cook themC . Choose crabs, shrimpsD . Enjoy fishing

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

PARAGRAPH 3 New York City is located in the southeastern part of New York State just east of New Jersey.The city was found by the Dutch in 1624. at first it was called Fort Amterdamand then New York.In 1664, the English took over the city and renamed it New York. With the population of more than7 milion in the city and 19 milion in the metropolitan region, New York is the largest city in theUnited States. It is divided into five parts, which are Manhattan, The Bronx, Brooklyn, Queens,and Staten Island. The total area of these parts is 964 square kilometers. Visitors to New York areall attracted by places such as the Statue of Liberty, the Empire State Building, Wall Street, andBroad way theatre district. New York is also where tourists can visit come world famous artgalleries and museums.QUESTIONS :

(1) Where is New York City ? _________________________________________________________(2) Why was New York originally called new Amsterdam ? _________________________________________________________(3) When was it found ? _________________________________________________________(4) What is its population ? _________________________________________________________(5) How many parts are there in the city ? _________________________________________________________(6) How big is it ? _________________________________________________________(7) What are visitors to New York attracted by ? _________________________________________________________

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

PARAGRAPH 4 London is Baitain’s biggest city. It is a very old city and dates back to the Romans. It is a city ofhistoric buildings anh churches, and is as many beautiful parks . It olso has some of the bestmuseums in the would. London is very crowded in summes . It is a popular city with foreigntourists ,and has mory than eight million visitors a year The city is famous for its shopping anddepartment storys . London has excellent underground railway system,so it is easy for tourysts toget around . In London , there are pienty of good restaurants where you can get excellent Brisitshfood . The city also has lots of good Indian, Chinese, Japanese, French, Italian , and Greekrestaurants . TRUE or FALSE :a. None of the cities in Britain is bigger than London . £b. London was founded by the Romans . £

c. London has historic buildings and churches . £d. Most of the best museums in the would are situated in London . £

e. London is not busy in summer . £f. Foreign tourists like visiting London . £

g. It’n not easy for tourists to travel around London . £h. You can’t get spaghetti or sushi in London . £

@@@@@@@@@@@@@@@@@@@@@@@

PARAGRAPH 5Vietnam’s New Year is celebrated according to the lunar calendar. it is officially known as TetNguyen Dan, or Tet. it begins between January twenty-first and February nineteen. The exact datechanges from year to year. Vietnamese people usually make preparation for the holiday severalweeks beforehand. They tidy their houses, cook special food, clean and make offering on thefamily altars. On the New Year’s Eve, people sit up to midnight to see the New Year in, then theyput on new clothes and give on another the greeting of the season. Tet lasts days. The first threedays are the most important. Vietnamese people believe that how people act during those days willinfluence the whole year. As a result, they make every effort to avoid arguments and smile as muchas possible.QUESTIONS : 1/ What is vietnam’s new year known as?

…………………………………………………………………………………………………………2/ When does the lunar new year begin?…………………………………………………………………………………………………………3/ What do Vietnamese people usually do to prepare for Tet?

…………………………………………………………………………………………………………4/ What do people do on the New Year’s Eve?…………………………………………………………………………………………………………5/ How long does Tet last?

…………………………………………………………………………………………………………6/ Why are the first three days the most important?

………………………………………………………………………………………………………

…@@@@@@@@@@@@@@@@@@@@@@@

PARAGRAPH 6

Tet is a national and (1) _____ festival in Vietnam. It is occasion for every Vietnamese to bereunited to think (2)____their past activities and hope for good luck (3)____the, year to come.

Before Tet all houses are white washed and (4) _____with yellow apricot flowers and colorfullanterns. Everybody is looking (5)_______to a more favorable life. (6)_____ the New Year’s Eve,children are smartly dressed. They are hoping to (7) _____ money put in small red envelopes asthey are wishing longevity to their grandparents and parents. Wrong doings (8)____be absolutelyavoided on these days.

1. a. traditional b. modern c. music d. summer2. a. for b. to c. after d. about3. a. in b. at c. on d. when4. a. decorate b. decorated c. decorating d. decorates5. a. at b. for c. after d.. forward6. a. In b. At c. On d. When

7. a. buy b. receive c. sell d. make8. a. should b. need c. ought d. have

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@

PARAGRAPH 7New York City is located in the southeastern part of New York State just east of New Jersey. The city was found by the Dutch in 1624. At first is called Fort Amsterdam, and then New Amsterdam. In 1664, the English took over the city and renamed it New York. With the population of more than7 millions in the city and 19 million in the metropolitan region, New York is the largest city in the United States. It is divided into five parts, which are Manhattan, the Bronx, Brooklyn, Queens, andStaten Island. The total area of these parts is 946 square kilometers. Visitors to New York are all attracted by places such as the Statue of Liberty, the Empire State Building, Wall Street, and Broadway theater district. New York is also where tourists can visit some world famous art galleries and museums.

Where is New York City? ………………………………………………………………………………………………

When was it found? ..............................................................................................................................................

How many parts are there in the city? ………………………………………………………………………………………………

What are visitors to New York attracted by? …………………………………………………………………………………………….

@@@@@@@@@@@@@@@@@@@@@@@@@@@PARAGRAPH 8

Vietnam’s New Year is celebrated according to the Lunar calendar. It is officially known asTet Nguyen Dan, or Tet. It begins between January twenty-first and February nineteen. The exactdate changes from year to year. Vietnamese people usually make preparations for the holidayseveral weeks beforehand. They tidy their houses, cook special food, clean and made offerings onthe family altars. On the New Year’s Eve, people sit up to midnight to see the New Year in, thenthey put on new clothes and give one another the greetings of the season. Tet lasts ten days. Thefirst three days are the most important. Vietnamese people believe that how people act during thosedays will influence the whole year. As a result, they make every effort to avoid arguments andsmile as much as possible.Questions 1. What is Vietnam’s New Year known as?…………………………………………………………………………………………….2. What do Vietnamese people usually do to prepare for Tet?…………………………………………………………………………………………….3. Does Tet last three days?……………………………………………………………………………………………4. Why are the first three days the most important?……………………………………………………………………………………………

PARAGRAPH 9Let's visit Tokyo

Tokyo, which is the capital of Japan, is one of the three largest cities in the world. In the twelfthcentury, Japan's capital was an inland city named Kyoto. Six hundred years later, many peoplefrom Kyoto had moved to a city called Eyed. They had renamed it Tokyo and had made this city

the capital of all Japan. Today, Tokyo is a busy place. It is a center for business and education. It isalso a center for religion. In addition, Tokyo University, the beautiful grounds of the ImperialPlace, the famous Imperial Hotel, built in 1920 by an American, Frank Lloyd Wright, and manyfine shops, stores, theaters and eating places can be found in this capital. In downtown Tokyo,many large, new buildings made of concrete and steel may be seen. Some of these were built afterthe earthquake of 1923. Others were built after World War II.* Answer the questions.1. Which city used to be the capital of Japan in the 12th century ?………………………………………………………………………………………………2. What did Tokyo use to be called?………………………………………………………………………………………………3. Who designed the Imperial Hotel ?……………………………………………………………………………………………..4. What were large, modern buildings in Tokyo made of ?…………………………………………………………………………………………….

MÔN VẬT LÍ - HS tự ôn tập lại lý thuyết theo hướng dẫn - Trả lời và giải các bài tập vào vở khi nào đi học Gv thu để chấm lấy điểm I.Lý thuyết1: Định luật về công: Không một máy cơ đơn giản nào cho ta lợi về công. Được lợi baonhiêu lần về lực thì thiệt bấy nhiêu lần về đường đi và ngược lại.Ví dụ: 1. Dùng ròng rọc động được lợi hai lần về lực thì lại thiệt hai lần về đường đi.Không cho lợi về công. 2. Dùng mặt phẳng nghiên đề nâng vật lên cao, nếu được lợi bao nhiêu lần về lựcthì thiệt bấy nhiêu lần về đường đi. Công thực hiện để nâng vật không thay đổi.2: Khái niê êm công suât. Công suất được xác định bằng công thực hiện được trong một đơn vị thời gian.

Công thức tính công suất:t

AP

Đơn vị công suất là oát. Kí hiệu là W 1 W = 1 J/s (jun trên giây) 1 kW (kilôoát) = 1 000 W 1MW (mêgaoát) =1 000 000 WVí dụ: Số ghi công suất trên động cơ điện: P = 1000W, có nghĩa là khi động cơ làm việcbình thường thì trong 1s nó thực hiện được một công là 1000J.3. Cơ năngg Khi vật có khả năng sinh công, ta nói vật có cơ năng.g Cơ năng của vật phụ thuộc vào độ cao của vật so với mặt đất, hoặc so với một vị tríkhác được chọn làm mốc để tính độ cao gọi là thế năng hấp dẫn. Vật có khối lượng cànglớn và càng cao thì thế năng hấp dẫn của vật càng lớn.g Cơ năng của vật phụ thuộc vào độ biến dạng của vật gọi là thế năng đàn hồi.g Cơ năng của vật do chuyển động mà có gọi là động năng. Vật có khối lượng càng lớnvà chuyển động càng nhanh thì động năng càng lớn.g Động năng và thế năng là hai dạng của cơ năng.g Cơ năng của một vật bằng tổng thế năng và động năng của nó.

+ A: công thực hiện (J)+ t: thời gian (s)+ P: công suất (J/s)

4. Sự chuyển hóa và bảo toàn cơ năngg Động năng có thể chuyển hóa thành thế năng, ngược lại thế năng có thể chuyển hóathành động năng.g Trong quá trình cơ học, động năng và thế năng có thể chuyển hóa lẫn nhau, nhưng cơnăng thì không đổi. Ta nói cơ năng được bảo toàn.

II. Trả lời và giải các bài tập sau:Bài 1: Một cần trục nâng một vật nặng 1500N lên độ cao 2m trong thời gian 5 giây. Tính công suất của cần trục.Bài 2. Một con ngựa kéo 1 cái xe đi đều với vận tốc 9km/h. Lực kéo của ngựa là 200N.a) Tính công suất của ngựa. b) Chứng minh rằng: = F.vBài 3: Hai công nhân, hàng ngày phải chất các thùng sơn, mỗi thùng nặng 500 N lên xetải, mỗi xe chở được 5 tấn, sàn xe cách mặt đất 0,8m. Một người chủ trương khiêng thẳngthùng sơn lên xe, một người chủ trương dùng ván nghiêng, rồi đẩy cho thùng sơn lên.a) Trong hai cách làm này, cách nào lợi hơn về công? Cách thứ nhất có lợi về mặt nào?Cách thứ hai có lợi về mặt nào?b) Tính công mà mỗi công nhân phải sản ra để chất đầy một xe. Bỏ qua ma sát trong cáctrường hợp.Bài 4: Người ta đưa một vật nặng lên độ cao h bằng hai cách. Cách thứ nhất, kéo trực tiếpvật lên theo phương thẳng đứng. Cách thứ hai, kéo vật theo mặt phẳng nghiêng có chiềudài gấp hai lần độ cao h. Nếu bỏ qua ma sát ở mặt phẳng nghiêng thìA. Công thực hiện ở cách thứ hai lớn hơn vì đường đi gấp hai lần.B. Công thực hiện ở cách thứ hai nhỏ hơn vì lực kéo vật theo mặt phẳng nghiêng nhỏhơn.C. Công thực hiện ở cách thứ nhất lớn hơn vì lực kéo lớn hơn.D. Công thực hiện ở cách thứ nhất nhỏ hơn vì đường đi của vật chỉ bằng nửa đường đicủa vật ở cách thứ hai.E. Công thực hiện ở hai cách đều như nhau.Bài 5: Một người đi xe đạp đạp đều từ chân dốc lên đỉnh dốc cao 5m. Dốc dài 40m. Tínhcông do người đó sinh ra. Biết rằng lực ma sát cản trở xe chuyển động trên mặt đường là20N, người và xe có khối lượng là 60kg.

MÔN HÓA 8 (Bài làm ra giấy khi nào đi học nộp cho GV bộ môn để chấm lấy điểm)

Câu 1: Hãy viết các PTHH theo các sơ đồ P/ứ sau đây:17) Fe + H2SO4

18) AgNO3 + HCl

19) Cu + H2SO4đnóng

20) BaCO3 + H2SO4

21) NaOH + CuSO4

22) Al(OH)3

23) Cu + Fe(NO3)2

24) K2CO3 + ? KCl + ?

25) Ba(NO3)2 + ? BaSO4 + ?

26) CuSO4 + ? K2SO4 + ?

27) AgNO3 + ? KNO3 + ?

28) ? + HCl → MgCl2 + H2↑

29) ? + AgNO3 → Fe(NO3)2 + Ag

30) ? + ? → Al2O3

31) ? + Cl2 → FeCl3

32) ? + ? → Na2S

Câu 2: Viết PTHH của các P/ư xảy ra giữa các cặp chất sau đây:a) Kẽm + Axit Clohidricb) Đồng + dd Bạc Nitratc) Bari + khí Clod) Nhôm + Lưu huỳnh

Câu 3: Nhận biết dung dich a) HCl, H2SO4 , NaOH, KClb) HCl, H2SO4 , Ba(OH)2 , KCl chỉ dùng quỳ tím.

Câu 4: Cho 10g hỗn hợp hai kim loại: Al và Cu tác dụng với dd H2SO4 20%, thu được 6,72 lít khí H2 (ở đktc).

a) Viết PT phản ứng.b) Tính khối lượng các chất có trong hỗn hợp.c) Tính thành phần tram khối lượng mỗi kim loại trong hỗn hợp.d) Tính khối lượng dd H2SO4 cần dùng.

Câu 5 : Cho 10,5g hỗn hợp 2 kim loại Cu,Zn vào dung dịch 500ml H2SO4 loãng dư,người ta thu được 2,24lít khí (đktc).

a/ Viết phương trình hoá học.b/Tính thành phần tram khối lượng mỗi kim loại trong hỗn hợp.c/ Tính nồng độ mol dung dịch axit H2SO4.

Câu 6: Cho 21,2 g Na2CO3 tác dụng vừa đủ với 400 ml dd HCl thu được khí (ở đktc).a) Viết PTHH xảy ra.b) Tính nồng độ mol của dd HCl đã dùng.c) Tính thể tích khí thu được .

Câu 7 : Trung hòa 200ml dung dịch H2SO4 1M bằng dung dịch KOH.

a. Viết phương trình hóa học xảy ra.

b. Tính thể tích(ml) dung dịch KOH 6%, khối lượng riêng bằng 1,048g/ml để trung hòa dung dịchaxit đã cho.

Câu 8 : Cho 15.5g natri oxi Na2O tác dụng với nước, thu được 0,5 lít dung dịch bazơ.

c. Viết phương trình hóa học xảy ra.

d. Tính nồng độ mol dung dịch bazơ thu được.

e. Tính thể tích(ml) dung dịch H2SO4 20%, khối lượng riêng bằng 1,14g/ml để trung hòa dung dịchbazơ đã cho.

MÔN SINH 8 (Bài làm ra giấy khi nào đi học nộp cho GV bộ môn để chấm lấy điểm)Phân I. Trăc nghiê êm: Khoanh tròn vào câu trả lời đúng trong các câu sau:Câu 1. Các nhân tố sinh thái được chia thành những nhóm nào sau đây?

A. Nhóm nhân tố vô sinh và nhân tố con người.B. Nhóm nhân tố ánh sáng, nhiệt độ, độ ẩm và nhóm các sinh vật khác.C. Nhóm nhân tố sinh thái vô sinh, nhóm nhân tố sinh thái hữu sinh và nhóm nhân tố

con người.D. Nhóm nhân tố con người và nhóm các sinh vật khác.

Câu 2. Vì sao nhân tố con người được tách ra thành một nhóm nhân tố sinh thái riêng?A. Vì hoạt động của con người khác với các sinh vật khác, con người có trí tuệ nên vừakhai thác tài nguyên thiên nhiên lại vừa cải tạo thiên nhiên.B. Vì con người có tư duy, có lao động.C. Vì con người tiến hoá nhất so với các loài động vật khác.D. Vì con người có khả năng làm chủ thiên nhiên.Câu 3. Nếu ánh sáng tác động vào cây xanh từ một phía nhất định, sau một thời gian cây mọc nhưthế nào?

A. Cây vẫn mọc thẳng.B. Cây luôn quay về phía mặt trời.C. Ngọn cây rủ xuống.D. Ngọn cây sẽ mọc cong về phía có nguồn sáng.

Câu 4. Ứng dụng sự thích nghi của cây trồng đối với nhân tố ánh sáng, người ta trồng xen cácloại cây theo trình tự sau:

A.Cây ưa bóng trồng trước, cây ưa sáng trồng sau.B.Cây ưa sáng trồng trước, cây ưa bóng trồng sau.C.Trồng đồng thời nhiều loại cây.D.Tuỳ theo mùa mà trồng cây ưa sáng hoặc cây ưa bóng trước.

Câu 5. Các cá thể cùng loài sống với nhau thành một nhóm trong cùng một khu vực cóthể cạnh tranh nhau gay gắt, dẫn tới một số cá thể có thể tách ra khỏi nhóm trong hoàncảnh nào dưới đây?

A. Khi có gió bão.B. Khi gặp kẻ thù xâm lấn lãnh địa.C. Khi môi trường cạn kiệt nguồn thức ăn, nơi ở quá chật chội.D. Khi có dịch bệnh.

Câu 6: Tỉ lệ giới tính trong quần thể thay đổi chủ yếu theo:A. Lứa tuổi của cá thể và sự tử vong không đồng đều giữa cá thể đực và cái.B. Nguồn thức ăn của quần thể.C. Khu vực sinh sống.

D. Cường độ chiếu sáng.Phân II. Tư luâ ên Câu 1. Các sinh vật khác loài có những mối quan hệ nào? Nêu đặc điểm của các mối quan hệ đó. Câu 2. Giới hạn sinh thái là gì? Em hãy vẽ sơ đồ giới hạn sinh thái của loài vi khuẩn suối nước nóng có giới hạn nhiê êt đô ê từ 0 đô ê C – 90 đô ê C, trong đó điểm cực thuâ ên là 55 đô ê C.Câu 3. Quần thể sinh vâ êt là gì? Nêu đă êc trưng của quần thể.Câu 4. Nêu ví dụ để chứng minh ánh sáng ảnh hưởng lên hình thái của cây.