研究一下这个，你就知道了

来源: 于 2007-01-23 12:00:42 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

http://www.uscis.gov/portal/site/uscis/menuitem.5af9bb95919f35e66f614176543f6d1a/?vgnextoid=1fb596981298d010VgnVCM10000048f3d6a1RCRD&vgnextchannel=d6f4194d3e88d010VgnVCM10000048f3d6a1RCRD