第三部分：阅读理解（共15小题；每小题2分，共两节, 满分30分）
第一节: 阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳。
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 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.
61. The passage is mainly about ______ .       
A. air pollution  B. water pollution    C. noise pollution   D. world pollution      
62. According to the passage, a continuous noise of _______decibels can make people deaf.
A. less than 85   B. less than 65       C. about 65             D. more than 85   
63. 10 percent of the workers in Britain are being deafened because _______ .
A. they are working in noisy places   B. they often listen to pop music
C. they live near airports           D. they are too busy to listen to others’ talk