完形填空 (30分) 阅读下面短文，从短文后所给的四个选项中，选出可以填入空白处的最佳选项。 A In today’s world, pollution has become a serious problem. 51. we know, air pollution is harmful to our health. However, not all people know that noise 52 also a kind of pollution and is harmful to human health. People who work and live in noisy conditions may become 53 . For example,  many of the workers who 54. newspapers and books become deaf. Quite a few people living near 55 also have hearing lose. Recently it was reported that many teenagers in America 56 hear better than the old do, because these young people always listen to 57 pop music.  Making a loud noise in public is also a kind of pollution, it not only 58 others but also does great harm to hearing. Cars and machines also produce 59 noise. It makes people feel uncomfortable and unpleasant. 60  , it can cause them to be sick or deaf.Nowadays many countries are trying to solve all sorts of environmental problems, including noise pollution. 小题1: A．So B．While C．As D．And 小题2: A．are B．is C．was D．were 小题3: A．excited B．dead C．thin D．deaf 小题4: A．make B．print C．catch D．take 小题5: A．factories B．airports C．schools D．gyms 小题6: A．can B．may C．can’t D．mustn’t 小题7: A．slow B．light C．fast D．loud 小题8: A．helps B．disturbs C．causes D．makes 小题9: A．much too B．lots of C．a little D．too many 小题10: A．By the way B．we know C．For example D．What’s more