单项选择题

A．Different people have different time space of sleep stages.
B．Some people do not need to go through all the sleep stages.
C．Sleep stages will repeat themselves when someone sleeps long.
D．You can remember the dream when you suddenly wake up.
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单项选择题
Why did the author offer the AIDS course
A．He wanted to teach people about a cure for AIDS.
B．People need to be taught how to avoid those with AIDS.
C．He wanted to teach the students that AIDS resulted from moral failure.
D．People take improper attitudes towards AIDS and those with or at high risk of AIDS.
单项选择题
A．A man who can make decisions.B．A man who can cooperate with others well.C．A man who doesn’’t mind working overtime.D．A man who cares little about money.
A．A man who can make decisions.
B．A man who can cooperate with others well.
C．A man who doesn’’t mind working overtime.
D．A man who cares little about money.
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