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春雨冬雪 · Oct 1st, 2012, 15:54

一直井底的蜗牛，白天可以爬二米，晚上下滑一米，已知井深五米，蜗牛多少天可以爬到井外？

Two lovely lady open dayhome in Millrise,PT/FT, pick up available, if you interesting PM me.

Oct 1st, 2012, 15:54	#1
春雨冬雪 Member 注册日期: Sep 2010 帖子: 52	new dayhome open 一直井底的蜗牛，白天可以爬二米，晚上下滑一米，已知井深五米，蜗牛多少天可以爬到井外？ Two lovely lady open dayhome in Millrise,PT/FT, pick up available, if you interesting PM me.
春雨冬雪 Member 注册日期: Sep 2010 帖子: 52