1/5单选题
难度：
1.
在平面直角坐标系中，一个二次函数的图象经过点A（1，0）、B（3，0）两点. 设这个二次函数图象的顶点为D，与y轴交于点C，它的对称轴与x轴交于点E，连接AC、DE和DB，当△AOC与△DEB相似时，这个二次函数的解析式为（ ）.
| A | y= |
| B | y=- |
| C | y= |
| D | y= |
x2-
x+
x+
x+
正确答案：RA==
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
x+2的图象与该二次函数的图象交于A、B两点，其中A点坐标为（
，
），B点在y轴上，直线与x轴的交点为F，P为线段AB上的一个动点（点P与A、B不重合），过P作x轴的垂线与这个二次函数的图象交于E点. D为直线AB与这个二次函数图象对称轴的交点，在线段AB上确定一点P，使得以点P、E、D为顶点的三角形与△BOF相似时，P点的坐标是（ ）. 
，
)，(
，
)
)
，
)，(