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(2009•内江)如图所示,数轴上表示2,的对应点分别为C,B,点C是AB的中点...
(2009•内江)如图所示,数轴上表示2,
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021225759361959943/SYS201310212257593619599011_ST/0.png)
的对应点分别为C,B,点C是AB的中点,则点A表示的数是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021225759361959943/SYS201310212257593619599011_ST/images1.png)
A.-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021225759361959943/SYS201310212257593619599011_ST/1.png)
B.2-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021225759361959943/SYS201310212257593619599011_ST/2.png)
C.4-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021225759361959943/SYS201310212257593619599011_ST/3.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021225759361959943/SYS201310212257593619599011_ST/4.png)
-2
考点分析:
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