单项选择题

Sleep is (controlled) by (the brain) and (associated by) characteristic (breathing) rhythms.

A．controlled
B．the brain
C．associated by
D．breathing
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单项选择题
That night, (tired) (though was he) , the Union Officer (went out) again to (look for) help.
A．tired
B．though was he
C．went out
D．look for
单项选择题
(Having finis) heal high school, the village education board (appointed) him (to) a teaching post (in) the primary school.
A．Having finis
B．appointed
C．to
D．in
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