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

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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

单项选择题

What all artists in common is that ______.

A．they use shapes and colors instead of words
B．they want the public to understand them and get something from their works
C．they want to show the public something that is difficult to explain
D．they want to learn from the public