题目

. –Hi, Bob, don’t you know me?    --Oh, it’s you. I _____you. A. didn’t recognize   B. don’t recognize   C. haven’t recognize   D. won’t recognize 答案:A12.已知A(3,0)、B(0,4),动点P(x0,y0)在线段AB上移动,则4x0+3y0的值为12.
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