单项选择题

The purpose of this passage is ______.

A．to give advice as to how to prevent hearing loss
B．to define the effects of noise on human behavior
C．to warn people of the danger of noise pollution
D．to tell the difference between noise and sound

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热门试题

单项选择题

One of the harmful effects of noise on human performance is that ______.

A．it deprives one of the enjoyment of music
B．it drowns out conversation at worksites
C．it reduces one's sensitivity to sound
D．it makes the victim helpless in everything

单项选择题

According to the passage, it is true to say that ______.

A．the public could share the artist's feelings through their choice of artistic creation sub-jects
B．the painter should not choose to paint ugly things
C．contemporary artists are completely different from other artists
D．all artists are teaching the public consciously