单项选择题

The keynote speaker was pleasantly surprised at how ______ the audience was during his talk.

A．graphic
B．monolingual
C．prosperous
D．attentive
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单项选择题
One of the important functions of college is to encourage the students to read ______ .
A．extending
B．extension
C．extensive
D．extensively
单项选择题
Please fill in the following form to claim a tax ______ from the IRS for the 2009-200 fiscal year.
A．reaction
B．resume
C．rebate
D．reliance
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