The sense of sound is one of our most important means of kno

The sense of sound is one of our most important means of knowing what is going on around us.Sound has a wasted product,too,in the form of noise.Noise has been called unwanted sound.Noise is growing and it may get much worse before it gets and better.Scientists,for several years,have been studying how noise affects people and animals.They are surprised by what they have learned.Peace and quiet are becoming harder to find.Noise pollution is a threat that should be looked at carefully.There is a saying about it being so noisy that you can’t hear yourself think.Doctors who study noise believe that we must sometimes hear ourselves think.If we don’t we may have headaches,other aches and pains,or even worse mental problems.Noise adds more tension(紧张) to society that already faces enough stress.But noise is not a new problem.In ancient Rome,people complained so much about noise that the government stopped chariots (四轮马车)from moving through he streets at night!Ways of making less noise are now being tested.There are even laws controlling noise.We cannot return to the “good old days” of peace and quiet.But we can reduce noise – if we shout loudly enough about it.(本题分数：10 分.)
(1).Why are scientists surprised by the findings in their noise study?
A、
Because the world is becoming more and more noisy.
B、
Because they have learned that noise is also a kind of pollution.
C、
Because noise is an unwanted waste for human beings.
D、 Because people knew little about the danger of noise before.
(2).What may be the result if we cannot hear ourselves think?
（2 分）
A、
We may forget what we have thought about.
B、
Our thoughts may be interfered.
C、
Our mind may be harmed.
D、 WE may have difficulty using the right words.
(3).When the writer says we cannot return to the good old days,he means that ( ).（2 分）
A、
our society is becoming much worse than before
B、
in our modern society it is hard to lead a quiet life
C、
the old days were much happier than the present time
D、 it is impossible for us to deal with noise as we did before
(4).From the last sentence of the passage we can learn that ( ).
（2 分）
A、
we can put noise under control if our measures are effective
B、
sometimes we have to shout loudly so that others can hear us
C、
shouting is a chief cause of noise pollution
D、 it is important to warn people of the danger of noise pollution
(5).Which of the following is TRUE according to the passage （2 分）
A、
Only recently did people realize the harmfulness of noise.
B、
Noise pollution is the worst kind of pollution we suffer from.
C、
People are now trying to find ways to make noise as low as possible.
D、 The writer thinks that it is almost impossible for people to avoid noise.

A C B D C