這是去年美國的五年存活率的統計結果:

來源: 閩姑於 2016-04-04 17:48:16 [博客] [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.