What can we infer from the saying' There's no one thing you can do'(ParA.2 )?
A.People can do nothing about silencing the noise of airplanes.
B.There are toe many things to be considered when people make planed quiet.
C.People have to deal with everything that causes the noise of airplanes.
D.Only one thing needs to be done when people silence the noise of airplanes.

A.People
B.
B.There
C.
C.People
D.
D.Only

【参考答案】

C
解析：本题要根据上下文进行语义推断，文章第二段提到，要想达到相对的安静，研究者需要重新考虑飞机的方方面面，不可能是处理一个问题就行了，必须解决引起噪音的所有来源。A的意思有偏差，文意不是说对飞机的减噪束手无策；B与文意不符，文意不是说对飞机的减噪要考虑的事情太多了以至于考虑不过来。D与文......

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