微积分知识让老师给偷回去了，所以没觉得好笑

来源: HUDIEMI 于 2010-04-13 22:40:28 [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.