In today's world， almost everyone knows that air pollution and water pollution are harmful to people's health． However， not all the people 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， scientists believe that 10% of the workers in Britain are becoming deaf because of the noise where they work． Many of the workers who print newspapers and who weave cloth（织布）become deaf． Plenty of 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， because these young people like to listen to pop music and most of pop music is a kind of noise． Besides， noise which is produced by jet planes or machines will make people's life difficult and unpleasant． It can make people ill or even drive them mad．

     It is said that a continuous noise of more than 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．

（1）Scientists believe 10% of the workers　　are becoming deaf because of their noisy

workplaces．

A． in America

B． in China

C． in Britain

（2）　　will probably become deaf．

A． Workers who print newspapers

B． People who live far from airports

C． Students who like listening to soft music

（3）According to the passage， noise from jet planes or machines can　　．

A． make people sleepy

B． drive people mad

C． cause people to die

（4）The underlined word "continuous" means　　 in Chinese．

A．正常的

B． 持续的

C．清晰的

（5）What's the best title of this passage？　　

A． Air Pollution

B． Water Pollution

C． Noise Pollution