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【单选题】
我校学生会由高一年级 5 人,高二年级 6 人,高三年级 4 人组成 ( 3 )若要选出不同年级的 2 人参加市里组织的活动,不同的选法种数是A.
24
B.
20
C.
30
D.
74
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举一反三
【单选题】It was in the lab ______ was taken charge of by Professor Harris _______ they did the experiment.
A.
which, that
B.
that, where
C.
where, that
D.
which, where
【简答题】为什么通常要选择margin最大的分类器？
【简答题】下手发球技术易犯的错误及纠正方法
【单选题】It was in the lab ______ was taken charge of by Professor Harris _______ they did the experiment.
A.
which , that
B.
that, where
C.
whom, that
D.
which, where
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