单项选择题

And the cars are tested for defects before leaving the factory.

A. functions
B. faults
C. motions
D. parts
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The boys broke into excited cheering.
A. burst
B. blasted
C. burned
D. blazed
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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