理论是被（主体）选择的，一种理论之所以流行，是因为“有用”

来源: 英二于 2020-11-16 05:58:46 [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.