回复：急问大侠们，关于居留时间，万谢！

You are not qualified for the US citizenship applciation due to unsatification of the physical presence requirement.

See:

http://www.uscis.gov/portal/site/uscis/menuitem.eb1d4c2a3e5b9ac89243c6a7543f6d1a/?vgnextoid=399faf4c0adb4210VgnVCM100000082ca60aRCRD&vgnextchannel=399faf4c0adb4210VgnVCM100000082ca60aRCRD

 

and:

http://www.uscis.gov/ilink/docView/SLB/HTML/SLB/0-0-0-1/0-0-0-29/0-0-0-9822.html