2017年大学英语四级阅读寒假练习题(14)
英语四级阅读理解是英语四级考试中的重点部分，而随着时代的发展，英语四级中的阅读题型也在不断更替改变，下面是小编为大家整理的英语四级阅读寒假练习题，希望可以为大家带来帮助。2017年大学英语四级阅读寒假练习题汇总
Passage Three
Questions 31 to 35 are based on the following passage.
A growing world population and the discoveries of science may alter this
pattern of distribution in the future. As men slowly learn to master diseases,
control floods, prevent famines, and stop wars, fewer people die every year; and
in consequence the population of the world is steadily increasing. In 1925 there
were about 2,000 million people in the world; by the end of the century there
may well be over 4,000 million.
When numbers rise the extra mouths must be fed. New lands must be brought
under cultivation, or land already farmed made to yield larger crops. In some
areas the accessible land is so intensively cultivated that it will be difficult
to make it provide more food. In some areas the population is so dense that the
land is parceled out in units too tiny to allow for much improvement in farming
methods. Were a large part of this farming population drawn off into industrial
occupations, the land might be farmed much more productively by modern methods.
There is now a race for science, technology, and industry to keep the output of
food rising faster than the number of people to be fed. New strains of crops are
being developed which will thrive in unfavorable climates: there are now farms
beyond the Arctic Circle in Siberia and North America; irrigation and
dry-farming methods bring arid lands under the plough, dams hold back the waters
of great rivers to ensure water for the fields in all seasons and to provide
electric power for new industries; industrial chemistry provides fertilizers to
suit particular soils; aeroplanes spray crops to destroy locusts and many plant
diseases. Every year some new means is devised to increase or to protect the
food of the world.
31. The author says that the world population is growing because _____.
A) there are many rich valleys and fertile plains
B) the pattern of distribution is being altered
C) people are living longer
D) new land is being brought under cultivation
32. The author says that in densely populated areas the land might be more
productively farmed if _____.
A) the plots were subdivided
B) a large part of the people moved to a different part of the country
C) industrial methods were used in farming
D) the units of land were made much larger
33. We are told that there are now farms beyond the Arctic Circle. This has
been made possible by _____.
A) producing new strains of crops
B) irrigation and dry-farming methods
C) providing fertilizers
D) destroying pests and disease
34. Which of these words is nearest in meaning to the word "strains"?
A) types B) sizes C) seeds D) harvests
35. The author's main purpose is to _____.
A) argue for a belief B) describe a phenomenon C) entertain D) propose a
conclusion
参考答案：
31-35 .CDAAA
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