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She claims to be very learned in biochemistry, but in fact () she knows about it is all sadly out of date.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
Your advice would be()valuable to him, who is at present at his wit’s end.

A. exceedingly
B. excessively
C. extensively
D. exclusively
单项选择题
I decided to get in touch with him () after I received his letter.

A. promptly
B. quickly
C. hastily
D. urgently
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