单项选择题

Doctors often make higher ______ for their works than they should.

A．charges
B．bills
C．costs
D．payments
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单项选择题
A．poorB．generousC．kindheartedD．rich
A．poor
B．generous
C．kindhearted
D．rich
单项选择题
A．goodB．longC．littleD．well
A．good
B．long
C．little
D．well
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