单项选择题

According to the doctors, if there were no ______, they would probably cure the disease.

A．complexities
B．completions
C．compliances
D．complications
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单项选择题
Cats sleep ______ day and hunt ______ night.
A．in, in
B．at, at
C．during, during
D．by, by
单项选择题
The cloth is ______.
A．as blue as green
B．bluer than green
C．more blue than green
D．so blue as green
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