双利河蟹太深奥了，说个简单的选择题：儿子和他爹掉河里了，他娘在岸上但只能救一个，怎么选？

来源: Shubin 于 2022-05-27 09:32:13 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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