单项选择题

A．Make up homework problems.
B．Do research in the library.
C．Teach an introductory economics course.
D．Grade homework sets.
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单项选择题
A．It costs much more than its worth.B．It should be brought up-to-date.C．It calls for immediate repairs.D．It can still be used for a long time.
A．It costs much more than its worth.
B．It should be brought up-to-date.
C．It calls for immediate repairs.
D．It can still be used for a long time.
单项选择题
A．They set their own exams.B．They select their own students.C．They award their own degrees.D．They organize their own laboratory work.
A．They set their own exams.
B．They select their own students.
C．They award their own degrees.
D．They organize their own laboratory work.
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