单项选择题

In that country, hospital doctors don't go sightseeing very often because their work ______ almost all their time.

A．takes up
B．takes off
C．takes apart
D．takes over
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单项选择题
After a concert tour in Asia, Canada and the U. S. , he will ______. work on a five-language opera.
A．confine
B．indulge
C．resume
D．undergo
单项选择题
It has long been known that total sleep ______ is 100 percent fatal to rats, yet, upon examination of the dead bodies, the animals look completely normal.
A．deposition
B．destruction
C．deprivation
D．reduction
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