阅读理解Intoday'sworld,almosteveryonek

阅读理解 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（几十岁的人）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 make people deaf. 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 problems1.The text is mainly about ______.A.air pollutionB.water pollutionC.noise pollutionD.world pollution2.10 percent of the workers in Britain are being deafened because ______.A.they are working in noisy placesB.they often listen to pop musicC.they live near airportsD.they are too busy to listen to others' talk3.About noise produced by jet planes or machines, which is wrong?A.It will make people's life difficultB.It will make people's life unpleasantC.It will even make people ill or even drive them madD.It will even make people hear better4.According to the text, a continuous noise of ______ decibels can make people deafA.less than 85B.less than 65C.about 65D.over 855.The government of China is trying to solve ______.A.only air pollutionB.only air and water pollutionC.only water pollutionD.air, water and noise pollution

CADDD解析试题分析：1.主旨题：从第一段的句子：However, not all the persons know that noise is also a kind of pollution, and that is harmful to human health, too可知本文讲的是噪音污染。选.C
2.细节题：从第二段的句子：10 percent of workers in Britain are being deafened by the noise where they work.可知

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