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10.In today's world,almost everyone knows that air pollution 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.Today,however,scientists believe that 10percent 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 85decibels(分贝) can cause deafness.Now the governments in many countries have made laws to control noise and make it less than 85decibels.
In China,the government is trying to solve not only air and water pollution problems but also noise pollution problems

28.The passage is mainly aboutB.
A.air pollution     B.noise pollution      C.water pollution     D.world pollution
29.According to the passage,a continuous noise ofCdecibels can make people deaf.
A.less than 85      B.less than 65         C.more than 85       D.about 65
30.10percent of the workers in Britain are being deafened becauseD.
A.they are too busy to listen to others'talk    
B.they often listen to pop music
C.they live near airports                    
D.they are working in noisy places
31.The government of China is trying to reduceA.
A.the air,water and noise pollution        B.only the air and water pollution
C.only the water pollution                  D.only the air pollution.

分析 这篇文章描写了噪音对身体有害以及各个国家的噪音污染情况.英国10%的工人正在变聋是因为他们在吵闹的地方工作,美国的青少年据说听力很差,是因为他们喜欢听流行音乐以及中国政府正在减少空气、水和噪音污染.

解答 28.B.:主旨题:根据第一段In today's world,almost everyone knows that air pollution 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.可知这篇文章主要讲了噪音污染的问题,故选B.
29.C:细节题:根据倒数第二段It is said that a continuous noise of over 85 decibels(分贝) can cause deafness.可知持续超过85分贝的噪音会让人耳聋,故选C.
30.D:细节题:根据第二段Today,however,scientists believe that 10 percent of workers in Britain are being deafened by the noise where they work.可知英国10%的工人正在变聋是因为他们在吵闹的地方工作,故选D.
31.A:细节题:根据最后一段In China,the government is trying to solve not only air and water pollution problems but also noise pollution problems.可知中国政府正在减少空气、水和噪音污染,故选A.

点评 本篇文章主要是细节理解方面的题型,需要考生通过跳读迅速找到对应的句子进行详细理解,句子的理解可以结合上下文意思,通过逻辑推理得到.

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