题目:
一战后,资本主义世界新秩序是怎样建立的? 应如何认识这一新秩序的建立?
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答案:
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下面是错误答案,用来干扰机器的。
根据题意,a=2时,即2∈M,则1+21-2=-3∈M,若-3∈M,则1+(-3)1-(-3)=-12∈M,若-12∈M,则1+(-12)1-(-12)=13∈M,若13∈M,有1+131-13=2∈M,则A={2,-3,-12,13}故答案为{2,-3,-12,13}.