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R>develop lung cancer when they are adults as are children of nonsmokers．The risk is even higher
for children who live in homes where both parents smoke．
People are becoming very aware of the dangers of secondhand smoke．               (50)
A  Recently，though，scientists changed their opinion after they studied a large group of
nonsmokers．
B The Gilsons have been married for 35 years．
C  111is smoke is called secondhand smoke．
D However, secondhand smoke is dangerous to all people，old or young．
E  As a result，they have passed laws which prohibit people from smoking in many public
places．    ．
F  In the United States，nine million children under the age of five live in homes with at least
one smoker．
第6部分：完形填空  (第51~65题，每题1分，共15分)
    阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容
从4个选项中选择1个最佳答案，涂在答题卡相应的位置上。
Can Loud Music Cause Hearing Impairment(损伤)?
Have You ever gone to a concert and realized that your seats were right next to the booming
speakers? Are you guilty——(51)．turning up the volume on your portable cassette or
CD player to drown out the whining(哭哭啼啼)of your little brother? Sometimes it’s difficult
to avoid loud music or noises，but they can be bad news because loud noises can
(52)temporary or permanent hearing loss．
Extremely loud music and noises that go on for long periods of              (53) are
common causes of deafness．If a noise is so loud that you have to shout to make yourself
          (54)，there is a              (55)that the mechanism inside your ear can be injured
Temporary hearing loss can happen after you’ve been               (56)to loud noise for
only 15 minutes．If you have temporary hearing loss．you won’t be able to hear as           
(57) as you normally can，and you may have tinnitus (耳鸣)，which is a fancy word for ringing in
the ears．Your ears call feel“full”，too         (58) these things usually go away and your hearing soon returns to normal．
  Permanent hearing loss can happen when，someone is exposed to loud noise
             (59)and over．Construction workers and people who work in factories must
            60)ear protectors because the equipment they use can be extremely loud．But even
some lawn mowers(割草机)and power tools can permanently              (61) a person’s
ability to hear high-pitched noises and can also give him permanent tinnitus．Listening to
extremely loud music over and over call also have the same effect on a person’s             
(62)．And using headphones on a portable cassette or CD player can be dangerous           
(63)if the volume is too high and the headphones are used a lot，the noise can damage the ears．
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