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Re:请大家帮我看一下我那个地方没理解题?

Posted by tom31203120 at 2009-08-28 14:15:35 on Problem 1149
In Reply To:Re:请大家帮我看一下我那个地方没理解题? Posted by:fedrick at 2009-07-04 15:55:41 
> 我也同样没有看明白
顾客走了门又关上了，第三个人只能打开第二个门 ！
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