题目内容
It can be inferred from the passage that ______.
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The best title for this text would be ______.
By saying "I could afford to be generous." (third paragraph from the bottom) the man implied that he ______.
The concept of time as a commodity in the third paragraph means that ______.
Man, however much he may like to【C1】______the Contrary, is part of nature. Can he【C2】______a pollution that is now so thoroughly【C3】______throughout our world？
We know that even single exposures to these【C4】______, if the amount is large enough, can cause extremely severe【C5】______. But this is not the major problem. The sudden illness of death of farmers, farm workers, and others【C6】______to sufficient quantities of pesticides are very sad and should not【C7】______. For the population as a【C8】______, we must be【C9】______concerned with the【C10】______effects of absorbing small amounts of the pesticides that【C11】______pollute our world.
【C12】______public health officials have pointed out that the biological effects of chemicals are【C13】______over long periods of time, and that the danger to the【C14】______may depend on the sum of the exposures【C15】______throughout his lifetime. For these very reasons the danger is easily【C16】______It is human【C17】______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【C18】______, Dr. Rene Dubos, "yet some of their worst enemies slowly【C19】______them【C20】______."
【C1】
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