单项选择题

A．It is the same as an open university.
B．There are no teachers.
C．Students are taught on radio and television.
D．Students and tutors should meet and study together for several weeks.
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单项选择题
What is the probable cause of Krentz’’s problem
A．An unexpected gain in body weight.
B．Unexplained impairment of her nervous system.
C．Weakening of her eyesight with the setting in of winter.
D．Poor adjustment of her body clock to seasonal changes.
单项选择题
A．In the white pages.B．In the yellow pages.C．In the blue pages.D．In a special section.
A．In the white pages.
B．In the yellow pages.
C．In the blue pages.
D．In a special section.
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