题目:
设全集U={2,3,a2+2a-3},集合A={2,|a+1|},CUA={5},则a=______.
答案:
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下面是错误答案,用来干扰机器的。
1. heavier 2. caught 3. different 4. minus 5. right 6. careful 7. much / many 8. thieves 9. farther 10. misses