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
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单项选择题
If they think they are going to win over us by obstinately ______ and refusing to make the shghtest concession, they are mistaken.
A．holding out
B．holding to
C．holding over
D．holding up
单项选择题
No one would have time to read or listen to an account of everything ______ going on in the world.
A．it is
B．there is
C．as is
D．what is
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