单项选择题

The law shall be effective ______ May 1.

A．as well
B．as for
C．as of
D．as regards
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单项选择题
You have no fight to ______ yourself from the action of your friends.
A．dissolve
B．dissociate
C．dissipate
D．disperse
单项选择题
______ air is to man, so is water to fish.
A．Like
B．As
C．Since
D．For
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