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  3. Once we thought of pollution【C1】______meaning simply smog—the choking, stinging, dirty air that hovers over cities. But air poll

Once we thought of pollution【C1】______meaning simply smog—the choking, stinging, dirty air that hovers over cities. But air poll

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问题     Once we thought of pollution【C1】______meaning simply smog—the choking, stinging, dirty air that hovers over cities. But air pollution, while it is still the most dangerous, is only one type of【C2】______among several which attack the most basic life functions. Through the controlled use of【C3】______, man has polluted the land, killing the【C4】______. By dumping sewage and chemicals【C5】______rivers and lakes, we have contaminated our drinking water. We are polluting the oceans, too, killing the fish and thereby depriving ourselves of an【C6】______food supply. 【C7】______of the problem is our exploding population. More and more people【C8】______more wastes. But this problem is intensified by our "throw-away" technology. Each year Americans dispose of 7 million autos, 20 million tons of waste paper, 25 millions pounds of toothpaste【C9】______and 48 million cans. We throw away bum wrappers, newspapers, and paper【C10】______. It is no longer fashionable to reuse anything. Today almost everything is disposable. Instead of repairing a toaster or a radio, it is【C11】______and cheaper to buy a new one and discard the old, even though 95 percent of its parts may still be【C12】______. Baby diapers, which used to be made of【C13】______cloth, are now paper throw-away. 【C14】______we will wear clothing made of paper; "Wear it once and throw it away. " will be the slogan of the fashion conscious. Where is this all to end? Are we turning the world into a gigantic dump, or is there hope that we can solve the pollution problem? 【C15】______, solutions are insight. A few of them are positively ingenious.
A. Soon B. wildlife C. functioning D. as E. invaluable
F. plates G. Fortunately H. Part I. insecticides J. produce
K. into L. reusable M. tubes N. contamination O. easier
【C2】
选项
答案N
解析 这里说，空气污染是…的一种，据此可推断应填contamination，contamination污染。
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