脑筋急转弯（不许GOOGLE答案）

来源: purplenight 于 2009-07-21 20:14:25 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

一头猪400斤，一座木桥承重200斤，请问400斤的猪是怎么过的承重200斤的木桥？

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