If we examine the amount of land available for this ever increasing population, we begin to see the problem. Not all land is useful to us because it cannot produce food. We can cut out about one fifth of it because it is covered by snow and ice. Then we can cut out another fifth because it is desert. Another fifth is mountains. The other fifth does not have enough soil for crops to grow because it is bare rock. Obviously. with so little land to support us, we should take great care not to reduce it any more or with the rapidly growing population we may sooner or later lack food to eat and place to live in.
31. What is the main topic of the passage?
A. The growth of the world's population.
B. The world's population and the shortage of cultivated land.
C. The necessity of reducing the rate of birth.
D. The shortage of cultivated land.
32.The world's population....at present.
A. is decreasing rapidly.
B. stands at about eight billion
C. has stopped growing
D. is still growing
33. According to the passage, we....
A. can grow crops on bare rock.
B. should protect land.
C. can cultivate on all land.
D. are not influenced by the land reduction.
34. Which of the following is closest in meaning to the word 'bare' in the second paragraph?
A. treeless
B. empty
C. rough
D. hard
35. Which of the following sentences is NOT true according to the passage?
A. Most of the world's land are uncultivated.
B. There has been a dramatic reduction of the birth rate.
C. Only one fifth of the world's land is being cultivated.
D. The rapid growth of population may lead to a shortage of land
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31. What is the main topic of the passage?
A. The growth of the world's population.
B. The world's population and the shortage of cultivated land.
C. The necessity of reducing the rate of birth.
D. The shortage of cultivated land.
32.The world's population....at present.
A. is decreasing rapidly.
B. stands at about eight billion
C. has stopped growing
D. is still growing
33. According to the passage, we....
A. can grow crops on bare rock.
B. should protect land.
C. can cultivate on all land.
D. are not influenced by the land reduction.
34. Which of the following is closest in meaning to the word 'bare' in the second paragraph?
A. treeless
B. empty
C. rough
D. hard
35. Which of the following sentences is NOT true according to the passage?
A. Most of the world's land are uncultivated.
B. There has been a dramatic reduction of the birth rate.
C. Only one fifth of the world's land is being cultivated.
D. The rapid growth of population may lead to a shortage of land
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