皮皮学，免费搜题
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搜题
【单选题】
正常人精子浓度为A.
≥5×106/次
B.
≥15X 109/L
C.
≥30X 109/L
D.
≥60X 109/L
E.
≥100X 109/L
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举一反三
【单选题】print('\npython')语句运行结果是
A.
输出npython
B.
先输出n然后在新的一行输出python
C.
在新的一行输出python
D.
输出\npython
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【单选题】______most of the guests____ to the 2009 Euro-Asia Economic Forum in Xi’an attended the forum punctually.
A.
invited
B.
to invite
C.
being invited
D.
had been invited
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