单项选择题

The chemical is deadly to rats but safe to cattle.

A．fatal
B．hateful
C．good
D．useful
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单项选择题
As a writer, he turned out three novels that year.
A．refused
B．read
C．produced
D．accepted
单项选择题
The indecisive man was readily persuaded to change his mind again.
A．easily
B．hardly
C．subtly
D．suddenly
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