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In today′s world,not all people know that noise is also a kind of pollution and is harmful to humans′health.
People who work and live in(76)noisy conditions go deaf easily.For example,many of the (77)workers who print newspapers and books go deaf.Quite a few people living near airports(78)alsohave hearing loss.Recently,it is(79)reportedthat many teenagers in Americacan hear no(80)betterthan 65-year-old people do,because they always listen to loud pop music.Making a loud noise (81)inpublic is also a kind of pollution.It not only disturbs others but also(82)does great harm to people′s hearing.Cars and machines also produce too much noise.Such pollution makes people feel(83)uncomfortableand unpleasant,and it can even cause(84)themto become sick or deaf.
Nowadays,many countries are(85)tryingto solve all sorts of environmental problems,including noise pollution.