单项选择题

When it was my turn to introduce myself, I was so nervous that my mind went ______.

A．blank
B．faint
C．vain
D．dim'
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Advanced computer technology has ______ an answer to accurate weather forecasting.
A．set up
B．come up with
C．filled in
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单项选择题
You can't prescribe before you ______ as a doctor.
A．fit
B．qualify
C．match
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