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
As an assistant in a shop, she tries to be courteous at all times, even when she is very tired.()

A. straightforward
B. polite
C. flexible
D. neat
单项选择题
The local government decided to merge the two firms into a big one.()

A. motivate
B. combine
C. compact
D. nominate
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