In today's world, almost everyone knows that air pollution（污染）and water pollution are harm

In today's world, almost everyone knows that air pollution（污染）and water pollution are harmful to people's health. However, not all the persons know that noise is also a kind of pollution, and that is harmful to human health, too.
People who work and live under noisy conditions usually become deaf（聋）. Today, however, scientists believe that 10 percent of workers in Britain are being deafened by the noise where they work. Many of the workers who print newspapers and books, and who weave（织）cloth become deaf. Quite a few people living near airports also become deaf. Recently it was discovered that many teenagers in America could hear no better than 65-year-old persons, for these young people like to listen to pop music and most of pop music is a kind of noise. Besides, noise produced by jet planes or machines will make people's life difficult and unpleasant, or even make people ill or even drive them mad.
It is said that a continuous noise of over 85 decibels（分贝）can cause deafness. Now the governments in many countries have made laws to control noise and make it less than 85 decibels.
In China, the government is trying to solve not only air and water pollution problems but also noise pollution problems.
【小题1】 The text is mainly about . A．air pollutionB．noise pollutionC．water pollutionD．world pollution【小题2】According to the text, a continuous noise of decibels can make people deaf.
　 A．less than 85B．less than 65C．more than 85D．about 65【小题3】10 percent of the workers in Britain are being deafened because . A．they are too busy to listen to others' talkB．they often listen to pop music C．they live near airportsD．they are working in noisy places【小题4】The government of China is trying to solve . A．air, water and noise pollution B．only air and water pollution C．only water pollutionD．only air pollutionB【小题1】C【小题1】D【小题1】A

(答案→)B【小题1】C【小题1】D【小题1】A 解析：可联系答.案.网客服索取。

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