单项选择题

The newly-built sound lab will be ______ next term so that the students will be easily understood the mechanism of echo.

A．put in use
B．in use
C．put into use
D．for use
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单项选择题
Don't always pursue the ______. That makes one become superficial.
A．rack
B．rage
C．radical
D．raid
单项选择题
He thought that he had interpreted it clearly. ______, no one caught what he had said.
A．Critically
B．Conversely
C．Evidently
D．Eventually
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