过三棱柱任意两个顶点的直线共15条,其中异面直线有____________对。

过三棱柱任意两个顶点的直线共15条,其中异面直线有____________对。

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Could I have some milk,some orange juice,and some eggs ?

Could I have some milk,some orange juice,and some eggs ?

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He had his bicycle yesterday.

He had his bicycle yesterday.

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我国地势特点带来的影响是(  )

我国地势特点带来的影响是(  )

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我国夏季气温最低的地区是(  )

我国夏季气温最低的地区是(  )

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