单项选择题

Astronauts are ______ all kinds of tests before they are actually sent up in a spacecraft.

A．inclined to
B．subjected to
C．prone to
D．bound to
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单项选择题
The teacher richly ______ the use of the word.
A．exemplifies
B．embodies
C．typifies
D．proclaims
单项选择题
Do you think it possible to have the work ______ within 3 days.
A．to do
B．done
C．to be done
D．being done
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