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  3. Where do pesticides(杀虫剂) fit into the picture of environmental disease? We have seen that they now pollute soil, water, and food

Where do pesticides(杀虫剂) fit into the picture of environmental disease? We have seen that they now pollute soil, water, and food

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问题     Where do pesticides(杀虫剂) fit into the picture of environmental disease? We have seen that they now pollute soil, water, and food, that they have the 【S1】______ 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 【S2】______. Can he 【S3】______ a pollution that is now so thoroughly distributed throughout our world?
    We know that even 【S4】______ exposures to these chemicals, if 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, and others exposed to 【S5】______ quantities of pesticides are very sad and should not occur. For the population as a whole, we must be more concerned with the 【S6】______ effects of absorbing small amounts of the pesticides that 【S7】______ pollute our world.
    Responsible public health officials have pointed out that the biological effects of chemicals are cumulative(积累的) over long periods of time, and that the danger to the individual may depend on the 【S8】______ of the exposures received throughout his lifetime. For these very reasons the danger is easily 【S9】______. 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 【S10】______ approach them unnoticed."

            Word Bank:
A. sum                  I. invisibly
B. power                J. authority
C. free                 K. small
D. unconsciously        L. nature
E. sufficient           M. slowly
F. ignored              N. delayed
G. society              O. escape
H. single
选项
答案B
解析
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