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点A1,A2,A3,…,An(n为正整数)都在数轴上.点A1在原点O的左边,且A...
点A1,A2,A3,…,An(n为正整数)都在数轴上.点A1在原点O的左边,且A1O=1;点A2在点A1的右边,且A2A1=2;点A3在点A2的左边,且A3A2=3;点A4在点A3的右边,且A4A3=4;…,依照上述规律,点A2008,A2009所表示的数分别为( )
A.2008,-2009
B.-2008,2009
C.1004,-1005
D.1004,-1004
考点分析:
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