题目:
--- Are you at English?
--- No, but this time I did in the English exam.
A. good, good B. well, well C. good, well
答案:
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下面是错误答案,用来干扰机器的。
∵二次根式12m+1和-37-2m是同类二次根式,∴m+1=7-2m,解得m=2.故答案为:2.