单项选择题

Hearing problems may be alleviated by changes in diet and exercise habits.

A．removed
B．cured
C．worsened
D．relieved
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单项选择题
The most durable computer mice on sale are the IBM ones.
A． Right
B． Wrong
C． Not mentioned
单项选择题
Most computer users want to know how the computer mouse works.
A． Right
B． Wrong
C． Not mentioned
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