单项选择题

A．Because they have had little exposure to high level of sounds.
B．Because they suffer from hearing loss.
C．Because they don’t know how to operate stereo systems.
D．Because they are not qualified engineers.
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单项选择题
A．The man attended the concert but he didn’t like it.B．The man was sorry to miss the football game.C．The man is more interested in football than in classical music.D．The man was sorry that he didn’t attend the concert.
A．The man attended the concert but he didn’t like it.
B．The man was sorry to miss the football game.
C．The man is more interested in football than in classical music.
D．The man was sorry that he didn’t attend the concert.
单项选择题
A．A housewife.B．A singer.C．A teacher.D．A musician.
A．A housewife.
B．A singer.
C．A teacher.
D．A musician.
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