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(2003•辽宁)在平面直角坐标系中,点P(-1,1)关于原点对称的点在( ) ...
(2003•辽宁)在平面直角坐标系中,点P(-1,1)关于原点对称的点在( )
A.第一象限
B.第二象限
C.第三象限
D.第四象限
考点分析:
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