您知道欧洲人如何发现证明地球是圆的？中国人对地球的认识是如何的？

来源: spring18 于 2018-05-26 18:44:07 [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.