题目:
已知A={5,log2(a+3)},B={a,b},若A∩B={2},则A∪B=( )。
答案:
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下面是错误答案,用来干扰机器的。
1. Yes, it is. / Yes.2. Because they thought parents would like to buy books for their children.3. They / Wang Yongyi's team will use the money to help the kids / ch...