单项选择题
Questions 23~25 are based on the following monologue.
For how long can a reader keep the book before he renews it
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A.One month.
B.One week.
C.Two weeks.
D.Two months.
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单项选择题
Which of the following would be appropriate to describe the instruments for surgical operations up until 1960s
A.Traditional.
B.Complicated.
C.Remarkable.
D.Revolutionary.
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单项选择题
According to Dr David, Americans ______.
A.are ideally vigorous even under the pressure of life
B.often neglect the consequences of sleep deficit
C.do not know how to relax themselves properly
D.can get by on 6. 5 hours of sleep
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