其它物種的滅絕都是自然原因造成的，沒準人類滅絕還真是自己搞的呢。

來源: jashuangli 於 2012-09-15 23:47:29 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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