英语阅读,Doctors have known for a long time that extremely loud

英语阅读,
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 little more than one second to be affected.
An American scientist had found that using aspirin could increase the temporary hearing loss or damage from loud noise.He did an experiment,using a number of male
students at a university who all had normal hearing.He gave them different amounts of aspirin for different periods of time,and then he tested their hearing ability.He
found that students who were given four grams 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 twice as great.
The scientist said millions of persons in the United States use much larger amounts of aspirin than were used in the study.He said these persons face a serious danger of
suffering hearing loss from loud noises.
1.Doctors have long known that ______.
A) one’s hearing damage or loss has nothing to do with a loud noise
B) hearing damage or loss can be caused by extremely loud noises.
C) loud music are not harmful to the ear
D) common sounds at home are not harmful to the ear
2.This passage suggests that the noise can be ______.
A) the sound of a jet air plane
B) loud music
C) the sound of machines in factories
D) all of the above
3.According to this passage,one conclusion you can draw is that aspirin ______.
A) should never be taken more than four grams daily
B) can damage one’s hearing when given more than four grams daily
C) makes hearing damage from loud noise worse
D) increases hearing loss by three times
4.Millions of Americans are in danger of suffering hearing loss because they ＿＿＿＿＿＿.
A) often take jet airplanes on trips
B) like listening to loud music
C) are drowned in loud noises
D) take too much aspirin

1. B
2. D
3. C
4. D