单项选择题

Questions 11-13 are based on the following dialogue between a student and a librarian.
Why is the book placed "on reserve"

A．It needs to be preserved until reprints come out.
B．It is the only copy of the kind and must be kept intact.
C．It is the professor’s own book put in the library.
D．It needs to be read by every one of the class.
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单项选择题
What kind of work will T-A’s be paid to do, according to the speech
A．Grading the students’ assignments.
B．Giving lectures to all the students.
C．Writing reports once a week.
D．Buying laboratory equipment.
单项选择题
Why does the speaker think that computer science education in Switzerland is particularly good
A．Because it covers a wide range of areas.
B．Because it is sponsored by the government.
C．Because it gives more emphasis to application.
D．Because it gets grants from companies for research.
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