非洲，拉美，印度等都很进步。比美国进步多了。美国独立后就落后了

来源: gulala 于 2015-02-02 17:36:59 [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.