单项选择题

"Sound", as defined by the psychologists,

A．can be measured in the same way that "noise" is measured
B．may be extremely harmful to health
C．is not at all different from "noise"
D．can be measured by machines

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热门试题

单项选择题

According to the passage, people ______.

A．can net work in a noisy situation
B．will suffer from complete deafness because of noise pollution
C．can be psychologically affected by working in very noisy factories
D．may cooperate well in a noisy surrounding

单项选择题

We can conclude from the passage that we need to control noise pollution if ______.

A．we want to stay both psychologically and physically healthy
B．we want to have better control over ourselves
C．we want to cooperate well
D．we don't want to be anxious