单项选择题

A．To do research.
B．To create new knowledge.
C．To complete the professor’s assignments.
D．To summarize what other people have written.
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单项选择题
A．It is not worth talking about. B．It is quite appropriate. C．It should cover more events. D．It should be narrowed down.
A．It is not worth talking about.
B．It is quite appropriate.
C．It should cover more events.
D．It should be narrowed down.
单项选择题
A．Go boating. B．Go bowling together. C．Play cards. D．Watch TV programs.
A．Go boating.
B．Go bowling together.
C．Play cards.
D．Watch TV programs.
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