Một vật chuyển động thẳng theo phương trình:
x = -0,5t2 +4t (m; s) a) Xác định x0, v0 , a b) Tính quãng đường vật đi được từ lúc t = 1s đến lúc t = 3s. Suy ra vận tốc trung bình trên quãng đường này c) Tính vận tốc của vật lúc t = 3s
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The most common side effects with acupuncture are soreness, slight bleeding and discomfort.
A. direct B. Indirect C. Original D. unwanted
1 They have carried out the project since the government....
2 Mr Han hasn't taken part in the meeting of the ..... for 2 years
3 She has not eaten lobster before
4 This is the first time I have read such a lovely story
5 It is the first time I have met such a famous actor
1. Rescue workers planned the operation carefully. It was a ………carefully-planned………………. rescue operation.
2. As a child I had curly hair. I was a ………curly-hair………….. child.
3. Linda works really hard. Linda is very ………hard-working…………..
4. The charity appeal show will go on for 24 hours. It's a ……24-hour……………….. show.
5. The writing in the script is brilliant. It's a ………brilliant-writing……….. script.
6. The canteen here is subsidised in part. There is a ……part-subsidised………………………… canteen.
7. The sports centre was constructed last year so it's still new. There is a ……………last -year-constructed ………………… sports centre.
Our travel brochure is about an eco tour to Central Highlands. The tour leaves the ABC office at 5 a.m. every Saturday and gets back at 8 p.m. the next day. The two-day tour doesn’t cost too much: only VND 900,000 per person. During this trip, you can go biking in the forest and watch wildlife. You can also visit Don village, enjoy cooking and staying overnight with local ethnic families. If we have enough time, we may visit coffee plantations to enjoy fresh coffee. But you need to behave responsibly. You should speak softly while watching the animals. And remember to respect local people's life and not to litter.
Mông cô chấm điểm cho em ạ!Cảm ơn cô.
1. They___________ for 3 hours when the storm suddenly broke.
A. had been running B. have been running
C. are running D. will be running
2. I___________ come to the conclusion that nowadays nobody cares about anything.
| A. will | B. had | C. do | D. have |
3. | I assumed you ___________ paying for the repairs until the end of last year. | |||
| A. have been | B. was been | C. are being | D. had been |
4. | ___________ get tired of answering the same questions every day? | |||
| A. Have you ever | B. Had you ever | C. Do you ever | D. Are you ever |
5. She___________ working on that manuscript for 2 years now. |
| |||
| A. will be | B. has been | C. had been | D. is |
6. | I___________ there once a long time ago and___________ back since. |
| ||
| A. went/ have not been | B. go/ am not |
| |
| C. have gone/ was |
| D. was going/ had not been |
7. The students___________ by Mrs. Linda. However, this week they___________ by Mr. Mike.
are usually taught/ are being taught
usually teach/ are teaching
have usually been taught/ have been teaching
were usually teaching/ are teaching
8. In the past the trip___________ very rough and often dangerous, but things___________ a great deal in the last hundred and fifty years.
A. was/ have changed B. is/ change
C. had been/ will change D. has been/ changed
9. Now you___________ from New York to Los Angeles in a matter of hours.
A. are flying B. would fly C. will fly D. can fly
10. When Carol___________ last night, I__________ my favorite show on television.
A. was calling/ watched B. called/ have watched
C. called/ was watching D. had called/ watched
11. By this time next summer, you ___________ your studies.
A. completes B. will complete
C. are completing D. will have completed
12. Right now, Jim___________ the newspaper and Kathy___________ dinner.
A. reads/ has cooked B. is reading/ is cooking
C. has read/ was cooking D. read/ will be cooking
Last night at this time, they __________ the same thing. She_________ and he the newspaper.
are doing/ is cooking/ is reading
were doing/ was cooking/ was reading
was doing/ has cooked/ is reading
had done/ was cooking/read
When I_________ home last night, I_________ that Jane________ a beautiful candlelight dinner.
had arrived/ discovered/ prepared
was arriving/ had discovered/ was preparing
have arrived/ was discovering/ had prepared
arrived/ discovered/ was preparing
Sam___________ to change a light bulb when he___________ and___________.
A. was trying/ slipped/ fell B. tried/ was slipping/ falling
C. had been trying / slipped D. has tried/ slips/ falls
16. Yesterday, I___________ for work late because I___________ to set my alarm.
A. had left/ forgot B. was leaving/ was forgetting
C. left/ had forgot D. had been leaving/ would forget
17. By the time we________ to the train station, Susan_________ for us for more than two hours.
A. will get/ has been waiting B. got/ was waiting
C. got/ had been waiting D. get/ will wait
I___________ for this company for more than thirty years, and I intend to stay here until I
___________ next year.
A. am working/ will retire B. am going to work/ am retiring
| C. work/ am going to retire | D. have been working/ retire | |
19. | My mother always the first___________ up and the last___________ to bed. | ||
| A. getting/ going | B. to get/ going | C. getting/ to go D. to get/ to go |
20. | I___________ you last night after dinner, but you___________ there. Where___________ you? | ||
| A. was calling/ are not/ are | B. called/ were not/ were | |
| C. had called/ had not been/ were |
refer
1.The insructor warned the sportsman not to repeat that mistake again.
2.The assistant told me to leave the address with the secretary.
3.The manager asked the client to phone to him for an answer the next day/the following day.
4.The father told the kid not to be so silly.
5.The photographer told me to give a smile.
6.Ann asked/begged her friend to help her make a decision.
7.The librarian told the student not to leave those books on the table,but to put them back on the shelf.
8.The nurse told the child to be a good girl and to sit quietly for five minutes.
9.My companion advised me to leave my things there.
10.The chairman told the participants not to discuss that question then.