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【单选题】
成年男性红细胞计数的参考值是: A. (3.5~5.0)×10 12 /L B.(4.0~5.5)×10 12 /L C.(5.5~6.5)×10 9 /L D.(3.5~5.0)×10 9 /L E.(4.5~5.5)×10 9 /LA.
（3.5～5.0）×10 12 /L
B.
（4.0～5.5）×10 12 /L
C.
（5.5～6.5）×10 9 /L
D.
（3.5～5.0）×10 9 /L
E.
（4.5～5.5）×10 9 /L
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【单选题】If the letter (to be mailed) (was placed) on the writing table an hour ago, it (is) certain (being) there now.
A.
to be mailed
B.
was placed
C.
is
D.
being
【单选题】After reading the passage, we learn that______
A.
the author believes that crime will certainly promote the rappers' album.
B.
the conventional wisdom of crime's connection with credibility is always true.
C.
being put into jail will not necessarily help a rappers' career.
D.
being put into jail may change the perceptions fans already have.
【单选题】Have you anything ___?
A.
to say about
B.
to say about it
C.
say about
D.
say about it
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【单选题】If the letter (to be mailed) was placed on the (writing) table an hour (ago), it is certain (will be) there now.
A.
to be mailed
B.
writing
C.
ago
D.
will be
【单选题】Systems of inbound and outbound lanes to promote the safe flow of vessel traffic in certain areas around the world are known as ______.
A.
merchant vessel reporting systems
B.
traffic separation schemes
C.
collision avoidance fairways
D.
restricted maneuverability channels
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