错，因为医生在万一时能拯救生命，而且生物化学知识丰富。

来源: porsche/911 于 2011-09-18 20:21:31 [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.