单项选择题

Mary wants to study medicine but she is not very clever. I don' t think she is______ it.

A．up to
B．for
C．within
D．towards
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单项选择题
The lifeboat ______in case it is necessary to take off the crew of the damaged ship.
A．has been put aside
B．has been put away
C．has been set aside
D．is standing by
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