挑战习题
1/5单选题
难度:

1.如图,抛物线经过A,C,D三点,且三点坐标为A(-1,0),C(0,5),D(2,5),抛物线与x轴的另一个交点为B点,点F为y轴上一动点,作平行四边形DFBG,当四边形DFBG为矩形时F点坐标为()
A (0,1)或(0,2)
B (0,3)或(0,4)
C (0,1)或(0,3)
D (0,2)或(0,3)
提示1:
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正确答案:RA==
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