-3的相反数是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160300099775159/SYS201310221603000997751000_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160300099775159/SYS201310221603000997751000_ST/1.png)
C.3
D.-3
考点分析:
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