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  3. The sense of sound is one of our most important means (方法，手段) of knowing what is going on around us. Sound has a wasted product,

The sense of sound is one of our most important means (方法，手段) of knowing what is going on around us. Sound has a wasted product,

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问题    The sense of sound is one of our most important means (方法，手段) 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 worse before it gets any 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 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 a 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 the streets at night.
   Ways of making less noise are now being tested. There are even laws controlling noise. We can’t return to the "good old days" of peace and quiet. But we can reduce noise — if we shout loudly enough about it.
What may be the result if we cannot hear ourselves think?
选项 A、We may forget what we have thought about.
B、Our thoughts may be interfered.
C、Our mind may be harmed.
D、We have difficulty using the right words.
答案C
解析 本题考查对相关句子句意的理解。文中第三段最后一句讲到“If we don’t, we may have headaches, other aches and pains, or even worse mental problems”，其意思是“否则，我们可能会头痛，或其他部位疼痛，甚至出现严重的精神问题”。对比四个选项，[A]、[B]、[D]没有被提及，而[C]则符合句意。
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