单项选择题

People waiting at an airport______.

A．enjoy hearing airplanes taking off and landing
B．are usually not troubled hy the noise
C．can easily tell sound from noise
D．are often physically affected by the noise

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热门试题

单项选择题

Sound , as defined by the psychologist,______.

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

单项选择题

People enjoy listening to music,______.

A．though they are receiving a lot of decibels of sound in fact
B．because it does not have any negative effect
C．because they do not have to tolerate the noise around them
D．even though it is sometimes unpleasant hearing strange sounds