单项选择题

What is the woman’s reply

A．They are too expensive.
B．They are very rewarding.
C．They are too easy.
D．They are given by a strict teacher.
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单项选择题
A．She knows Professor Arnold has come.B．She thinks Professor Arnold has checked in.C．She is sure that Professor Arnold has arrived.D．She doesn’t know whether Professor Arnold has arrived.
A．She knows Professor Arnold has come.
B．She thinks Professor Arnold has checked in.
C．She is sure that Professor Arnold has arrived.
D．She doesn’t know whether Professor Arnold has arrived.
单项选择题
What idea does the author want to convey in the first paragraph
A．It is wrong to overestimate the importance of teaching.
B．Teaching and research are contradictory to each other.
C．Research can never be emphasized too much.
D．The relationship between teaching and research should not be simplified.
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