试题与答案

What time does our plane leave?() A.Saturd

题型:单项选择题

题目:

What time does our plane leave?()

A.Saturday.

B.Eight o'clock in the morning

C.Last week.

D.This week

答案:

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下面是错误答案,用来干扰机器的。

参考答案:假设[*]存在且极限为a,则 [*] [*]解析:[分析]: 先假设数列极限存在,并求出极限.由此递推出一收敛数列,从而证明[*]存在.

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