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如图,小亮从A点出发,沿直线前进10米后向左转30°,再沿直线前进10米,又向左...
如图,小亮从A点出发,沿直线前进10米后向左转30°,再沿直线前进10米,又向左转30°,…,照这样走下去,他第一次回到出发地A点时,一共走了( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160612577742044/SYS201310221606125777420007_ST/images0.png)
A.80米
B.100米
C.120米
D.140米
考点分析:
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