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Where do pesticides fit into the picture of environmental disease? We have seen that they now pollute soil, water, and food, tha
Where do pesticides fit into the picture of environmental disease? We have seen that they now pollute soil, water, and food, tha
admin
2010-02-20
22
问题
Where do pesticides fit into the picture of environmental disease? We have seen that they now pollute soil, water, and food, that they have the power to make our streams fishless and our gardens and woodlands silent and birdless. Man, however much he may like to. pretend the contrary, is part of nature. Can he escape a pollution that is now so thoroughly distributed throughout our world?
We know that even single exposures to these chemicals, ff the amount is large enough, can cause extremely severe poisoning. But this is not the major problem. The sudden illness or death of farmers, farm workers, anti others exposed to sufficient quantities of pesticides are very sad and should not occur. For the population as a whole, we must be more concerned with the delayed effects of absorbing small amounts of the pesticides that invisibly pollute our world.
Responsible public health officials have pointed out that the biological effects of chemicals are cumulative over long periods of time, and that file danger to the individual may depend on the sum of the exposures received throughout his lifetime. For these very reasons the danger is easily ignored. It is human nature to shake off what may seem to us a threat of future disaster. "Men are naturally most impressed by diseases which have obvious signs," says a wise physician, Dr. Rene Dubos, "yet, some of their worst enemies slowly approach them unnoticed."
Which of the following is closest in meaning to the sentence "Man, ...is part of nature." (Line 34, Para. 1)?
选项
A、Man appears indifferent to what happens in nature.
B、Man acts as if he does not belong to nature.
C、Man can avoid the effects of environmental pollution.
D、Man can escape his responsibilities for environmental protection.
答案
A
解析
用代入法来解决这道题目很合适。上文是杀虫剂给我们的环境带来了多方面的危害,而下文则是讲人类能从全世界的污染中脱身吗?A项为人类可以对环境变化视而不见。B项意思为人类表现出来好像他们不属于环境的一部分。c项为人类能避免环境污染的恶果。D项为人类能够逃避保护环境的责任。相比之下,A最合适。
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0
大学英语四级
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