单项选择题

Many species have ______ before man can document them properly.

A．finished
B．crushed
C．vanished
D．furnished
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单项选择题
Few are so silly as to dash back into the house on fire to fetch the money ______ their lives.
A．at the rate of
B．at the risk of
C．in the interest of
D．in the case of
单项选择题
I m sorry to ______ you while you re working but I must ask you a question.
A．interfere
B．bother
C．catch
D．take
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