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过抛物线y2=4x焦点的直线交抛物线于A,B两点,若|AB|=10,则AB的中点...
过抛物线y2=4x焦点的直线交抛物线于A,B两点,若|AB|=10,则AB的中点到y轴的距离等于( )
A.1
B.2
C.3
D.4
考点分析:
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