单项选择题


Questions 22 to 25 are based on the conversation you have just heard.

A．He lost his office key.
B．He is unable to talk.
C．He hasn’t finished grading exams.
D．He doesn’t like his students.
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单项选择题
A．19 thousand.B．11 million.C．222 million.D．4 million.
A．19 thousand.
B．11 million.
C．222 million.
D．4 million.
单项选择题
A．The reason that people need sleep.B．The results of sleep loss.C．The effects of oversleeping.D．Different kinds of sleep disorders.
A．The reason that people need sleep.
B．The results of sleep loss.
C．The effects of oversleeping.
D．Different kinds of sleep disorders.
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