Doctorshaveknownforalongtimethatextremelyloudnoisescanc...

問題詳情：

Doctors have known for a long time that extremely loud noises can cause hearing damage or loss. The noise can be the sound of a jet airplane or machines in factories or loud music or other common sounds found at home and at work. A person only needs to hear the noise for a little more than one second to be affected.

   An American scientist has found that using aspirin can increase the temporary (暫時的) hearing loss. He did an experiment using a number of students at a university who all had normal hearing. He gave them different amount of aspirin for different periods of time, then he tested their hearing ability. He found that students who were given four grams (克) of aspirin a day for two days suffered much greater temporary hearing loss than those who did not use aspirin. The hearing loss was about two times as great.

  The scientist said millions of people in the United States use much larger amounts of aspirn than were used in his experiment. He said these persons faced a serious danger of suffering hearing loss.

1．Doctors have long known that _____________.

A.        one may become deaf when he hears a loud noise

B.        loud noises can cause damage to the hearing of young people only

C.        one may lose his hearing when he hears a terribly loud noise

D.       common sounds at home are no harmful to the ear

passage suggests that one’s hearing ________________.

A.  will be damaged even if he has heard a loud noise for less than one second

B.   will be damaged even if he has heard a loud noise for only a little more than one second

C.  will not be damaged if he has heard a loud noise only a little more than one second

D.  will not be damaged if he has a little more than one second to get ready

3. One conclusion you can draw from this passage is that aspirin _____________.

A.      should never be taken more than four grams

B.      can damage one’s hearing when it is given more than four grams daily

C.      makes hearing damage caused by loud noise worse

D.     always increases hearing loss by two times

4. The American scientist did his experiment in order to find _________________.

A.  how much aspirin would affect a person’s hearing

B.   how much aspirin should be given in the treatment of the patients with hearing loss

C.  whether aspirin would increase the temporary hearing loss

D.  whether the person who had hearing damage should use aspirin

【回答】

1.C  2.B  3.B  4. A

知識點：閱讀理解

題型：未分類