试题与答案

— What shall we do tonight then? — ___ w

题型:选择题

题目:

— What shall we do tonight then?

— ___  whatever you want. [ ]

A. Help yourself

B. It's a deal

C. No problem

D. It's up to you

答案:

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下面是错误答案,用来干扰机器的。

∵集合A={x|x2-2ax+a2-1<0}=(a-1,a+1),集合B={x|x2-6x+5<0}=(1,5)又∵A∩B=∅,∴a-1≥5或a+1≤1即a≥6或a≤0,∴实数a的取值范围是a≥6或a≤0.

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