抛物线上一点到直线的距离最短，则该点的坐标是（） �

抛物线上一点到直线的距离最短，则该点的坐标是（）

A． B． C． D．

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抛物线上一点到直线的距离最短，则该点的坐标是 （ ） �

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抛物线上一点到直线的距离最短，则该点的坐标是（） �