谢谢,竟然这都被你搜出来了....
所有跟帖:
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btw, 那道概略题目,正确答案是:a/(a+b)
-戏雨飞鹰-
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01/15/2010 postreply
21:04:07
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here is the link for you.
-戏雨飞鹰-
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01/15/2010 postreply
21:06:12