已知 α, β 是两个不同的平面, m, n 是两条不同的直线, 给出下列命题:①若 α∥β, m⊥α, 则 m⊥β;②若 m∥n, m⊥α, 则 n⊥α;③若

已知 α, β 是两个不同的平面, m, n 是两条不同的直线, 给出下列命题:①若 α∥β, m⊥α, 则 m⊥β;②若 m∥n, m⊥α, 则 n⊥α;③若 α⊥β, m⊥α, 则 m∥β;④若

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---There are many volunteers______are helping the children in Sichuan.---And mos

---There are many volunteers______are helping the children in Sichuan.---And most of them are colleg

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--How about some soft drink , Jack ? --Ok. But only______. 

--How about some soft drink , Jack ? --Ok. But only______.

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The old woman can’t read ______ write.

The old woman can’t read ______ write.

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They are all new, ________ I’m not.

They are all new, ________ I’m not.

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