单项选择题

She claims to be very learned in biochemistry, but in fact ______ she knows about it is all sadly out of date.

A．so little
B．that much
C．what little
D．how much
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单项选择题
Don't rest on your laurels; ______ your success and start looking for new markets now.
A．add up
B．follow up
C．work up
D．count up
单项选择题
Although the end of the term was close ______, Jim had not completed all of the projects he had hoped to finish.
A．on hand
B．by hand
C．at hand
D．in hand
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