单项选择题

If there is the need to compete in a crowd, to battle ______ the edge the surest strategy is to develop the unexpected.

A．on
B．for
C．against
D．with
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单项选择题
It is a myth that the law permits the Food and Drug Administration to ignore requirements for ______ drugs while brand-name drugs still must meet these rigid tests.
A．specific
B．generic
C．intricate
D．acrid
单项选择题
If you've got a complaint, the best thing is to see the person concerned and ______ with him.
A．tell it
B．have it out
C．say it
D．have it known
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