单项选择题

What is the woman’s reply

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.
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单项选择题
According to the fourth paragraph, which of the following will the author probably agree with
A．Distinguished professors at research universities should concentrate on research only.
B．The separation of teaching from research can lower the quality of future scientists.
C．It is of utmost importance to improve teaching in elementary schools in order to train new scientists.
D．The rapid development of modern science makes it impossible to combine teaching with research.
单项选择题
In academic promotions research universities still attach more importance to research partly because ______.
A．research improves the quality of teaching
B．students who want to be challenged appreciate research professors
C．it is difficult to evaluate teaching quality objectively
D．professors with achievements in research are usually responsible and tough
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