题目内容

尽量延迟张伞的跳山运动 :n.

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These extreme sports belong in the __________ (分类) of popular hobbies.

__________ (慢跑) can be done at any time anywhere and does not even need any special equipment.

There is no reason to say you have no time for __________ (爱好) .

奇数次实系数多项式必有实根。

A. 对
B. 错

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