老油条都是这样。社会生产率提高靠技术. 个人提高可以不记。

来源: 蒙得于 2013-02-24 14:07:22 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.