单项选择题

Please put up your bands if you have any questions

A．raise
B．reach
C．wave
D．fold
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单项选择题
The Foreign Service is a branch of the Department of State．
A．center
B．division
C．root
D．base
单项选择题
My father is a physician．
A．researcher
B．professor
C．doctor
D．student
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