2007职称英语（理工类）模拟试题(3)

　　6.补全短文

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　　1. Many adults in the United States can remember crying the nursery rhyme in the street "Hot cross buns!" （46） ______

　　2. Written advertisements probably began with hieroglyphics more than three thousand years ago but only a few people could read these symbols. So merchants made signs with pictures of their tools over their doors to identify their businesses.

　　3. In the time of the Roman Empire, wall paintings were a popular form of advertisement. （47） ______ People often advertised a house for rent or a freshwater bath in this way, too.

　　4. Today, large wall signs are still used for outdoor advertising. But outdoor advertising is only a small fraction of the total advertising. About forty per cent of all ads are printed in daily newspapers. （48） ______ Some people think they are the best form of advertising because radio broadcasts reach almost everyone in a nation.

　　5. （49） ______ However, usually only large companies can advertise on a national network, because TV commercials shown across the country can cost many thousands of dollars.

　　6. Then there are ads that are almost part of daily living. （50） ______ Ads are painted on the trucks that deliver products people are buying or selling.

　　A. Advertisements in magazines and on television reach many people, too.

　　B. An ad for a play, or some other performance was painted on part of a building or on a wall around a city.

　　C. But only a few people realize this was an early form of advertising.

　　D. If you use public transportation, you will see large printed ads, called car cards, on buses and taxis and in train.

　　E. Advertisements can be seen everywhere.

　　F. Radio commercials also provide this kind of information.

　　7.完形填空

Chemical Plution

　　Where do pesticides （杀虫剂） fit into the picture of environmental disease? We have seen that they now （51） ______ soil, water, and food, that they have the （52） ______ to make our streams fishless and our gardens and wood-lands silent and birdless. Man, （53） ______ 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, if the amount is large enough, can cause extremely severe poisoning. But this is not the （54） ______ problem. The （55） ______ illness or death of farmers, farm workers, and 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 （56） ______ the delayed effects of absorbing small amounts of the pesticides that invisibly pollute our world.

　　Responsible public health officials have （57） ______ that the biological effects of chemicals are cumulative over （58） ______ periods of time, and that the danger （59） ______ the individual may depend on the sum of the exposures received throughout his lifetime. For these very reasons the danger is easily （60） ______. It is human nature to shake off what may seem to us a （61） ______ of future disease. "Men are naturally most （62） ______ by diseases which have （63） ______ signs," says a wise physician, Dr. Rene Dubos, "（64） ______ some of their worst enemies （65） ______ approach them unnoticed."