单项选择题

Bacteria are sometimes______ too small to be seen without a microphone.

A．far
B．rather
C．quite
D．very
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单项选择题
Nobody______ when I complained about the food, so nothing was done about it.
A．turned to me
B．relied on me
C．backed me up
D．held me up
单项选择题
An estimated 20 percent of the U.S. population has no bank account, more than half of this group don' t have credit card______ can not get bank loans.
A．or
B．so
C．and
D．yet
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