(一)TheNaturalBalanceBeingAltered根据以下材料回答题:Thebalanceofnatureisaveryelaborat

发布时间:2021-01-07 17:15:19

共享题干题                                (一)The Natural Balance Being Altered   根据以下材料回答题:  The balance of nature is a very elaborate and delicate system of check and countercheck. It is continually being altered as climates change, as new organisms evolve, as animals or plants spread to new areas. But the alterations have in the past, for the most part, been slow. whereas with the arrival of civilized man, their speed has been multiplied much: from the evolutionary time-scale where change is measured by periods of ten or a hundred thousand years, they have been transferred to the human time-scale in which centuries and even decades count.     Everywhere man is altering the balance of nature. He is facilitating the spread of plants and animals into new regions. Sometimes deliberately, sometimes unconsciously. He is covering huge areas with new kinds of plants, or with houses, factories, slagheaps and other products of his civilization. He gets rid of some species on a large scale, but favors the multiplication of others. In brief, he has done more in five thousand years to alter the biological aspect of the planet than has nature in five million years.     Many of these changes which he has brought about have had unforeseen consequences. Who would have thought that the throwing away of a piece of Canadian waterweed would have caused half the waterways of Britain to be blocked for a decade? Or that provision of pot cacti for lonely settlers' wives would have led to Eastern Australia being covered with forests of prickly pears?     Who would have predicted that the cutting down of forests on the Adriatic coast, or in parts of Central Africa, could have reduced the land to a semi-desert with the very soil washed away from the bare rock? Who would have thought that improved munications would have changed history by the spreading of disease- sleeping sickness into East Africa, measles into Ocean, AIDS around the whole world? These are spectacular examples, but examples on a smaller scale are everywhere to be found. We made a nature sanctuary for rare birds, providing absolute security for all species; and we may find that some mon and hardy kind of birds multiplies beyond measure and drive away the rare kinds in which we are particularly interested. We see, owing to some little change brought about by civilization, the starting spread over the English countryside in hordes. We improve the yielding capacities of our cattle; and find that how they exhaust the pastures which were sufficient for less demanding stock. We gaily set about killing the carnivores that disturb our domestic animals, the hawks that eat our fowls and game-birds; and find that in so doing we are also removing the brake that restrains the multiplication of mice and other little rodents that gnaw away the farmers' profits.1.[不定向选择题]It can safely be inferred from the article that__________A.civilized man is No1 enemy of nature B.altering the balance of nature will definitely lead to man's extinction from the planet C.modem technology sometimes makes people's life worse rather than better D.most deserts and senti-deserts are due to the cutting down of forests. 2.[不定向选择题]The word "unforeseen" (Line 1) in Paragraph 3 means__________A.that have never been seen B.that have never been experienced C.that cannot be accepted D.that cannot be expected

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1.参考答案:C
参考解析:原文第四和第五段列举了大量的事例来说明人类对自然界平衡的破坏,导致了一系列严重的后果。选项C较为确切地表达出了这一层意思,而其他三项都过于绝对,在原文中没有根据。
2.参考答案:D
参考解析:“unforeseen”的词义一是可以从其本身的构词特征上着手,我们应该能够猜出foresee的意思是“预见”。那么unforeseen应该就是“难以预见的”。另一方面,我们可以从作者在下文中不断运用的“who would have thought predicted…”句式中猜测其义,这是一种虚拟表达方式,表示“谁能想得到或预见到……”。也就是说,作者所依据的例子都是一些事先想不到的或无法预见的后果。3.[不定向选择题]The author's concem with the balance of nature, as evidenced by this passage, is best defined as__________A.intense and objective B.conscientious but humorless C..sincere and subjective D.deep but dry
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