单项选择题

A．Red.
B．Green.
C．Blue.
D．Purple.
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单项选择题
The idea that professors should do research as well as teach was imported from Germany in the late 19th century.
A．Y
B．N
C．NG
单项选择题
A．They should call the fire department.B．The man should go to the party again.C．The man should contact the newspaper.D．The man should seek counseling.
A．They should call the fire department.
B．The man should go to the party again.
C．The man should contact the newspaper.
D．The man should seek counseling.
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