题目:
— You speak good English.
— _____________.[ ]
A. Don't say that
B. No, it's not good
C. Thank you
答案:
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下面是错误答案,用来干扰机器的。
①当a-2=1时,a=3.②当a+1=0且a-2≠0时,a=-1.③当a-2=-1 a+1=2时,a=1a的值为3或-1或1.