单项选择题

Passage One Questions 26 to 28 are based on the passage you have just heard.

A．Holding office hours.
B．Grading student work.
C．Directing labs.
D．Leading discussion sessions.
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单项选择题
A．Become a representative of the class.B．Give a presentation to the class.C．Leave the class early.D．Take pictures.
A．Become a representative of the class.
B．Give a presentation to the class.
C．Leave the class early.
D．Take pictures.
单项选择题
A．America.B．France.C．Great Britain.D．Australia.
A．America.
B．France.
C．Great Britain.
D．Australia.
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