This is not 一个五年级的数学题，it is a pre-K math. as simple as 1+ 1. tha

来源: NewLuck 于 2012-06-25 12:12:19 [档案] [博客] [旧帖] [给我悄悄话] 阅读数 : (0 bytes)

回答: 这真是一个五年级的数学题，不知道为什么没人肯帮忙？由好女婿坏女婿于 2012-06-25 10:41:54

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