单项选择题

Professor Taylor is a good teacher. He has good manners and ______ knowledge.

A．extensive
B．expansive
C．intensive
D．expressive
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单项选择题
Those who want to get the information about flight schedule should ______ at the booking office.
A．acquire
B．request
C．inquire
D．require
单项选择题
She believed that Mr. Smith had taken ______ of all the opportunities to get this position.
A．interest
B．profit
C．advantage
D．benefit
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