Choose the best answer
1. John reminded me _____________ his motorbike by 8 o’clock.
A. please return B. not forget to return
C. remember to return D. to return
2. Copper is the favored metal for electricians’ wire because of _______________________.
A. its excellent conductivity B. it is excellent conductor
C. excellent conductivity of it D. so conductive it is
3. I’d love _________ to the party tomorrow, but it may be impossible.
A. to going B. go C. going D. to go
4. He was often made __________ milk by his mother.
A. drink B. drinks C. to drink D. drunk
5. We strongly recommend ________ your luggage when you travel.
A. to insure B. you insuring C. your insurance D. you to insure
6. She was the first in her family ____________ a college education.
A. get B. getting C. to get D. gotten
7. “You got home late last night.” “The Morgans insisted _________ for dinner.”
A. on our staying B. for us to stay C. that we were staying D. about us staying
8. Peter was the winner, and he was _________ a set of CDs for studying English.
A. awarded B. announced C. welcomed D. responded
9. The teacher said “Time is up!”. It means “Time is __________.”
A. started B. increased C. shortened D. finished
10. More and more people are taking part in the struggle ________ illiteracy.
A. for B. against C. with D. about
11. We were made _________ hard when we were at school.
A. to study B. study C. studying D. studied
12. Stacey seems to be a bright student. She’s always the first one__________ her work.
A. to finish B. finishing C. being finished D. to be finish
13. A (n) ______________ is a person who is killed because of his / her political beliefs.
A. invalid B. soldier C. veteran D. martyr /ma:tê/
14. It was difficult to ___________ a date which was convenient for everyone.
A. agree B. organize C. arrange D. provide
15.At first, I found it difficult __________ on the left-hand side of the road.
A. to get used to drive B. to get used to driving
C. being used to drive D. in getting used to driving
16. The factory is said ______________in a fire two years ago.
A. being destroyed B. to have been destroyed
C. to have destroyed D. to destroy
17. He had a portrait ___________ as a birthday present for his daughter.
A. painting B. paint C. painted D. to be painted
18. He apologized to_________ able to finish the project on time.
A. his colleagues not being B. his colleagues for not being
C. his colleagues not to be D. his colleagues for being
19. Nowadays, young men with a technical education __________ because of the great demand for highly skilled workmen.
A. is well-paid B. should pay well C. are well-paid D. could pay well
20. She was worried about __________________.
A. being robed B. robbing C. being robbed D. be robbing
21. This test ______________ of multiple-choice questions.
A. consists on a number B. consists in a number
C. consists to a number D. consists of a number
22. While they were ______________ tables, he was _________ the radio.
A. arranging/listening to B. arranging/hearing
C. laying/listening to D. making/hearing
23. I suddenly remembered that I _______________ to bring my keys.
A. having forgotten B. have forgotten
C. had forgotten D. forgot
24. By the year of 2010, many people currently employed __________ their jobs.
A. will have lost B. will be losing C. have lost D. are losing
25. Jack made me __________ him next week.
A. to promise to call B. to promise calling
C. promise calling D. promise to call
26. I can’t find my umbrella. I ___________ it in the restaurant last night.
A. must have left B. had left C. left D. might leave
27. I wish everything ______________ so expensive.
A. wouldn’t be B. would be C. won’t be D. could be
28. The injured man couldn’t walk and had to ___________________.
A. be carried B. carry C. being carried D. be carrying
29. The prisoner _______________ to have escaped by climbing over a wall.
A. thought B. is thought C. is think D. has thought
30. In England, there is an old story about a man called Robin Hood. It’s said that he took money from ________ and gave it to the poor.
A. rich peoples B. the rich C. rich person D. a rich people
31. We visited Canada and __________ United States.
A. one B. a C. an D. the
32. It is earth’s gravity that _______________ people their weight.
A. gives B. give C. giving D. given
33. Birds make nests in trees ___________ hide their young in the leaves and branches.
A. can where they B. where they can C. where can they D. where can
34. Children learn primarily by ________ the world around them.
A. experiencing directly of B. experience direct
C. directly physical experience D. direct physical experience of
35. America’s first globe maker was James Wilson, who _____ and blacksmith in his early life.
A. a farmer had been B. had been a farmer
C. farming D. being a farmer
36. “Our business is _________.” –“Really? Now we have to make a report on it.”
A. doing B. done C. made D. making
37. ________ ten minutes earlier, you would have got a better seat.
A. Had you arrived B. If you hadn’t arrived
C. Were you arrived D. If you arrived
38. The conical leaf hat is one of the typical features of the Vietnamese _______________.
A. education B. culture C. society D. language
39. _________ I moved in my new apartment my neighbors have come to my house twice.
A. Because B. Since C. When D. After
40. Is Amy married ? ______________________________________.
A. I think B. I think not C. I don’t think so D. I don’t think that
Trả lời (1)
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1. John reminded me _____________ his motorbike by 8 o’clock.
A. please return B. not forget to return
C. remember to return
D.to return
2. Copper is the favored metal for electricians’ wire because of _______________________.
A. its excellent conductivity B. it is excellent conductor
C. excellent conductivity of it D. so conductive it is
3. I’d love _________ to the party tomorrow, but it may be impossible.
A. to going B. go C. going D. to go
4. He was often made __________ milk by his mother.
A. drink B. drinks C. to drink D. drunk
5. We strongly recommend ________ your luggage when you travel.
A. to insure B. you insuring C. your insurance D. you to insure
6. She was the first in her family ____________ a college education.
A. get B. getting C. to get D. gotten
7. “You got home late last night.” “The Morgans insisted _________ for dinner.”
A. on our staying B. for us to . stay C. that we were staying D. about us staying
8. Peter was the winner, and he was _________ a set of CDs for studying English.
A. awarded B. announced C. welcomed D.responded
9. The teacher said “Time is up!”. It means “Time is __________.”
A. started B. increased C. shortened D. finished
10. More and more people are taking part in the struggle ________ illiteracy.
A. for B. against C. with D. about
11. We were made _________ hard when we were at school.
A. to study B. study C. studying D. studied
12. Stacey seems to be a bright student. She’s always the first one__________ her work.
A. to finish B. finishing C. being finished D. to be finish
13. A (n) ______________ is a person who is killed because of his / her political beliefs.
A. invalid B. soldier C. veteran D. martyr /ma:tê/
14. It was difficult to ___________ a date which was convenient for everyone.
A. agree B. organize C. arrange D. provide
15.At first, I found it difficult __________ on the left-hand side of the road.
A. to get used to drive B. to get used to driving
C. being used to drive D. in getting used to driving
16. The factory is said ______________in a fire two years ago.
A. being destroyed B. to have been destroyed
C. to have destroyed D. to destroy
17. He had a portrait ___________ as a birthday present for his daughter.
A. painting B. paint C. painted D. to be painted
18. He apologized to_________ able to finish the project on time.
A. his colleagues not being B. his colleagues for not being
C. his colleagues not to be D. his colleagues for being
19. Nowadays, young men with a technical education __________ because of the great demand for highly skilled workmen.
A. is well-paid B. should pay well C. are well-paid D. could pay well
20. She was worried about __________________.
A. being robed B. robbing C. being robbed D. be robbing
21. This test ______________ of multiple-choice questions.
A. consists on a number B. consists in a number
C. consists to a number D. consists of a number
22. While they were ______________ tables, he was _________ the radio.
A. arranging/listening to B. arranging/hearing
C. laying/listening to D. making/hearing
23. I suddenly remembered that I _______________ to bring my keys.
A. having forgotten B. have forgotten
C. had forgotten D. forgot
24. By the year of 2010, many people currently employed __________ their jobs.
A. will have lost B. will be losing C. have lost D. are losing
25. Jack made me __________ him next week.
A. to promise to call B. to promise calling
C. promise calling D. promise to call
Mk đang bận có gì mình làm tiếp
bởi Nguyễn Minh Thư 12/10/2018Like (0) Báo cáo sai phạm
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C. Vonfram - Bạc - Nhôm - Đồng.
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A. Biên độ âm.
B. Tần số âm.
C. Tốc độ truyền âm.
D. Môi trường truyền âm.
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a) Sóng âm được tạo ra bởi (1)… của nguồn âm.
b) Độ to của âm có liên hệ với (2)…
c) Độ cao của âm có liên hệ với (3)…
d) Vật dao động càng mạnh thì (4)… Càng lớn, và sóng âm nghe được có (5)… càng lớn.
e) nguồn âm dao động càng nhanh thì (6)… càng lớn phải sóng âm nghe được có (7)… càng lớn.
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Một người thổi sáng tạo ra hai âm với hai thao tác sau:
- Dùng các ngón tay bịt kín tất cả các lỗ từ 1 đến 6
- Để hở tất cả các lỗ từ 1 đến 6
Trong trường hợp nào âm thanh phát ra trầm hơn? Giải thích.
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A. tăng lên gấp đôi khi chiều dài tăng lên gấp đôi và tiết diện dây tăng lên gấp đôi.
B. giảm đi một nửa khi chiều dài tăng lên gấp đôi và tiết diện dây tăng lên gấp đôi.
C. giảm đi một nửa khi chiều dài tăng lên gấp đôi và tiết diện dây tăng lên gấp bốn.
D. tăng lên gấp đôi khi chiều dài tăng lên gấp đôi và tiết diện dây giảm đi một nửa.
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A. vật liệu cách âm.
B. vật liệu thấu âm.
C. vật liệu truyền âm.
D. vật liệu phản xạ âm.
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A. Trong hang động có mối nguy hiểm.
B. Có người ở trong cũng đang nói to.
C. Tiếng nói của em gặp vật cản bị phản xạ và lặp lại.
D. Sóng âm truyền đi trong hang quá nhanh.
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A
B
1. Độ cao.
A. Phản xạ âm tốt
2. Độ to.
B. Phản xạ âm kém
3. Tiếng vang.
C. Biên độ âm
4. Vật dao động.
D. Âm phản xạ
5. Bề mặt cứng, nhẵn.
E. Sóng âm
6. Bề mặt mềm, sẫn sùi.
G. Tần số âm
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c) Để ngăn chặn sự truyền âm, người ta sử dụng (4)…
d) Hiện tượng tiếng ồn quá to và kéo dài, gây ảnh hưởng xấu đến sức khỏe và hoạt động của con người được gọi là (5)…
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