单项选择题

Butter is cheap when it is plentiful, and ___________ when it is in shortage.

A．costly
B．expensive
C．dear
D．priceless
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单项选择题
The writer tried to be as _____________ as possible in evaluating his latest work.
A．fair
B．just
C．objective
D．uncolored
单项选择题
To make matters even worse, it rained _____________ for five days after the big earthquake.
A．successively
B．successfully
C．succeedingly
D．exceedingly
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