所以这是一个俺们科学问题，到底是鸡生蛋，还是蛋生鸡。

来源: 开枝散叶于 2017-12-08 09:31:59 [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.

Change Ad Consent