单项选择题

The machine is unsafe because of the defects in it.

A．faults
B．tricks
C．mistakes
D．merits
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单项选择题
A reporter from the local paper asked for details of the accident.
A．typist
B．typewriter
C．correspondent
D．doctor
单项选择题
The farmer chased sheep into a wheat field.
A．drove
B．caught
C．tempted
D．purchased
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