挑战习题
1/5单选题
难度:

1.

如图,正比例函数yx与二次函数y=-x2+2x+3的图象都经过点A(2,m). 若二次函数图象的对称轴与正比例函数的图象相交于点B,与x轴相交于点C,点Q是x轴的正半轴上的一点,如果△OBC与△OAQ相似,点Q的坐标为(    ).



A

(2,0),(,0)

B

(﹣2,0),(,0)

C

(﹣2,0),(,0)

D

(2,0),(,0)

提示1:
PHA+6K6+Ue+8iHjvvIxv77yJ77yIeO+8njDvvIkuIOW9k3g9MeaXtuaxguWHuueCuULjgIFD55qE5Z2Q5qCH77yM5YaN55Sx4pazT0JD4oi94pazT0FR5ZKM4pazT0JD4oi94pazT1FB5pe277yM5YiG5Yir5rGC5b6X54K5UeeahOWdkOagh+WNs+WPry48L3A+
正确答案:QQ==
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