美國的人口結構自從建國以來一直都在變。請你展開說一下，怎麽個影響法？

來源: Mao_8341 於 2016-12-21 14:29:43 [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.