阅读短文，在空白处填入一个适当的单词或括号内单词的正确形式。In today's world, almost everyone knows air pollution is harmful to people's health, However, not all people know noise is also a kind of pollution and is harmful to {#blank#}1{#/blank#} (human) health.
People who work and live in {#blank#}2{#/blank#} (noise) conditions often go deaf. For example, many of the workers who print newspapers and books lose their hearing. Quite {#blank#}3{#/blank#} few people living near airports also have hearing loss. Recently, it was reported that many teenagers in America can hear no better than 65-year-old people do, because these young people always listen to loud pop music.
Making a loud noise in public is also a kind of pollution. It not only disturbs (打扰) others but also does great harm {#blank#}4{#/blank#} people's hearing. Cars and machines produce far more noise in our life. Such pollution makes people feel uncomfortable and unpleasant, and it can even cause them {#blank#}5{#/blank#} (become) sick or deaf. Nowadays, many countries are trying to solve all kinds of environmental problems, including noise pollution.
