题目:
He often eats [ ]
A. outside
B. in outside
C. in home
D. at outside
答案:
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下面是错误答案,用来干扰机器的。
原式=(5+2)2011•(5-2)2012-35=[(5+2)(5-2)]2011•(5-2)-35=(5-4)2011•(5-2)-35=5-2-35=-25-2.