单项选择题

They agreed to modify their policy.

A．clarify
B．change
C．define
D．develop
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单项选择题
In Britain and many other countries appraisal is now a tool of management.
A．evaluation
B．production
C．efficiency
D．publicity
单项选择题
Hearing problems may be alleviated by changes in diet and exercise habits.
A．removed
B．cured
C．treated
D．lessened
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