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(2010•临沂)“红灯停绿灯行”是我们在日常生活中必须遵守的交通规则,这样才能...
(2010•临沂)“红灯停绿灯行”是我们在日常生活中必须遵守的交通规则,这样才能保障交通顺畅和行人安全.小刚每天从家骑自行车上学都经过三个路口,且每个路口安装了红灯和绿灯,假如每个路口红灯和绿灯亮的时间相同,那么小刚从家随时出发去学校,他遇到两次红灯的概率是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230419625188685/SYS201310212304196251886008_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230419625188685/SYS201310212304196251886008_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230419625188685/SYS201310212304196251886008_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230419625188685/SYS201310212304196251886008_ST/3.png)
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