单项选择题

What may happen if we cannot hear ourselves think（）

A．We may forget what we have thought about.
B．Our thoughts may be disturbed.
C．Our mind may be harmed.
D．We may have difficulty finding the right words.

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热门试题

单项选择题

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 noise before.

单项选择题

When the writer says we cannot return to the good old days, he means that （）

A．our society is becoming much worse than before
B．in our modem 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