Bài tập tiếng Anh lớp 12 Unit 9 Deserts có đáp án

Bài tập tiếng Anh Unit 9 lớp 12 Deserts có đáp án

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Choose the word whose underlined part is pronounced differently from that of the others:

1. A. circleB. centerC. censusD. cancel
2. A. areaB. ariseC. arrangeD. arrive
3. A. dessertB. desertC. deserveD. prefer
4. A. roughlyB. toughC. enoughD. though
5. A. gentlyB. germC. gearD. gene

Choose the word or phrase (A, B, C or D) that best completes each of the following sentence.

6. They made an aerial survey; that is, they made a survey_________.

A. by ship

B. by plane

C. on foot

D. by telescope

7. Hummock grasses grow in loose sand on the crest.


B. bottom

C. top

D. inside

8. Eight kilometers is_________ equivalent to five miles.

A. exactly

B. roughly

C. rarely

D. precisely

9. Older people_________ a large proportion of those living in poverty.

A. comprise

B. consist

C. compose

D. compound

10. She has the windows open, _________it is cold outside.

A. however

B. therefore

C. although

D. so

11. There is still much to discuss. We shall, _________, return to this item at our next meeting.

A. therefore

B. moreover

C. although

D. so that

12. The sea was dangerous, _________we didn't go out for a swim.

A. since

B. but

C. so

D. as

13. The new trains have more powerful engines and are; _________, faster.

A. therefore

B. however

C. nevertheless

D. nonetheless

14. It was cold and wet. _________, Paul put on his swimming suit and went to the beach.

A. Although

B. Therefore

C. However

D. Because

15. I had no choice_________sign the contract.

A. despite

B. but

C. without

D. unless

16. You can dress_________you like.

A. whatever

B. therefore

C. however

D. nevertheless

17. _________hard he tried, he couldn't open the door.

A. Therefore

B. However

C. Although

D. Despite

18. We took a map with us_________.

A. so that we would get lost

B. so that we wouldn't get lost

C. so that we won't get lost

D. in order to get lost

19. We'll buy everything you produce_________it's reasonable.

A. provided

B. so

C. only

D. except

20. Sunglasses come_________many different colors, shapes, and strengths.

A. with

B. from

C. by

D. in

21. You are expected_________the safety regulations of the school.

A. know

B. to know

C. knowing

D. being known

22. _________ his father, he is a biologist.

A. Like

B. Alike

C. The same

D. As

23. Everyone_________happy at the last meeting.

A. are

B. were

C. was

D. is

24. Did you paint it yourself or did you_________ it painted?

A. make

B. do

C. have

D. ask

25. We_________drive fast; we have plenty of time.

A. can't

B. needn't

C. mustn't

D. oughtn't

26. If you_________there what would you have done?,

A. were

B. had been

C. would be

D. would have been

27. They'll be able to walk across the river_________.

A. if the ice will be thick enough

B. unless the ice is thick enough

C. if the ice is thick enough

D. when the ice will be thick enough

28. Please call if you're going to arrive_________.

A. as late

B. late

C. lately

D. later than

29. Nobody knew that Uncle Ben was coming to see us. He arrived_________.

A. unexpecting

B. unexpected

C. unexpectedly

D. expectantly

30. 'He is back already.' 'He_________very early.'

A. should have started

B. must have started

C. shouldn't have started

D. can't have started

31. We expected that our team_________, but it didn't.

A. will win the game

B. can win the game

C. would win the game

D. will be winning the game

32. You can see the details_________the computer screen.

A. in

B. on

C. at

D. by

33. Don't walk too fast. I can't keep_________you.

A. on to

B. on with

C. up to

D. up with

34. Rita is not used _________on her own.

A. for living

B. to live

C. with living

D. to living

35. He bought a ticket_________.

A. and his brother did either

B. but his brother didn't, too

C. and so his brother bought

D. and so did his brother

Choose the underlined part in each sentence that needs correcting:

36. A study (A) of the (B) difference between (C) synthetic and natural vitamins are (D) needed.

37. You must take quickly (A) the test in order to (B) finish (C) in time (D).

38. Most (A) vacationers can't stand traveling (B) in packed (C) cars or stay (D) in dirty hotel rooms.

39. That's (A) the best (B) exhibition I've never (C) seen (D).

40. Jack is looking (A) for another (B) job for he says (C) he is really fed up of (D) doing the same thing every day.

Read and choose the letter (A, B, C or D) that best completes the tasks that follow:

The size and location of the world's deserts are always changing.

Over millions of years, as climates change and mountains rise, new dry and wet areas develop. But within the last 100 years, deserts have been growing at a frightening speed. This is partly because of natural changes, but the greatest desert makers are humans.

In developing countries, 90 percent of the people use wood for cooking and heating. They cut down trees for firewood. But trees are important. They cool the land under them and keep the sun off the smaller plants. When leaves fall from a tree, they make the land richer. When the trees are gone, the smaller plants die, and there is nothing but sand. Yet people must use firewood, raise animals, and grow crops in order to live.

Humans can make deserts, but humans can also prevent their growth.

Algeria planted a green wall of trees across the edge of the Sahara to stop the desert sand from spreading. Mauritania planted a similar wall around Nouakchott, the capital. Iran puts a thin covering of petroleum on sandy areas and plants trees. The oil keeps the water and small in the land, and men on motorcycles keep the sheep and goats away. Other countries build long canals to bring water to desert areas.

Yet land that will probably become desert in the future equals the size of Australia, the United States, and the former Soviet Union together. Can people stop the growth of the world's deserts and save the land that is so essential to life?

41. Most people in developing countries_________.

A. planted trees on the edge of the deserts

B. cook on wood fires

C. put oil on sandy areas

D. raise sheep and goats

42. We can infer that men on motorcycles keep the sheep and goats away so that_________.

A. they won't eat the small trees

B. they won't destroy the covering of oil

C. they won't drink water in the canals

D. they won't blow the sand away

43. When all the trees in an area are cut down, _________.

A. their leaves make the land richer

B. the smaller plants can grow better

C. they cool the land under their leaves

D. there is nothing left but sand

44. The word frightening speed in the first paragraph is closest in meaning to_________.

A. awful

B. extremely fast

C. powerful

D. wonderful

45. According to the passage, which of the following is the most important cause of desertification?

A. The change of climate

B. The spread of deserts

C. Human activities

D. Cattle destroying trees

Choose the word or phrase (A, B, C, or D) that best fits each space in the following passage.


The Sahara Desert is growing by 10kms each year. The whole earth gets 600km2 of desert area more every year. This process is called "desertification". This term started being (46)_____ in the 1950s.

The idea of desertification was first known in the 1930s. Much of the Great Plains grew very dry (47)______ a result of drought and poor farming techniques. It was called the Dust Bowl. Millions were forced to leave their farms and their ways of life. Since then, (48)_____ have been great improvements in farming practices in the Great Plains. These have prevented the Dust Bowl disaster (49)______ again.

Grazing is one worry. Cows do two things to the soil. First, they eat grasses and plants that hold the soil in place. Second, their hooves break down the top layer of soil. The result is that the good soil can be blown away by the wind. The dirt (50)______ behind is not good for growing.

46. A. use B. used C. to use D. using

47. A. as B. for C. by D. with

48. A. it B. they C. there D. those

49. A. to occur B. to occurring C. of occurring D. from occurring

50. A. leaves B. to leave C. left D. leaving


Choose the word whose underlined part is pronounced differently from that of the others:

1 - D; 2 - A; 3 - B; 4 - D; 5 - C;

Choose the word or phrase (A, B, C or D) that best completes each of the following sentence.

6 - B; 7 - C; 8 - B; 9 - A; 10 - A;

11 - A; 12 - C; 13 - A; 14 - B; 15 - B;

16 - A; 17 - B; 18 - B; 19 - A; 20 - B;

21 - B; 22 - A; 23 - C; 24 - C; 25 - B;

26 - B; 27 - C; 28 - B; 29 - C;30 - B;

31 - C; 32 - B; 33 - B; 34 - D; 35 - D;

Choose the underlined part in each sentence that needs correcting:

36 - D; 37 - A; 38 - C; 39 - C; 40 - D;

Read and choose the letter (A, B, C or D) that best completes the tasks that follow:

41 - B; 42 - A; 43 - D; 44 - B; 45 - C;

Choose the word or phrase (A, B, C, or D) that best fits each space in the following passage.

46 - B; 47 - A; 48 - C; 49 - D; 50 - C;

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