Let me answer you once more.

If you can not find it, try to get a new one ASAP. Try to contact your area Chinese Consulate to see how long it takes.
Here is a link for Chicago, http://www.chinaconsulatechicago.org/chn/qzhz/hz/t174200.htm

If you already have a 485 interview date scheduled, I am not sure how you can go for it w/o your passport.
Take care

請您先登陸,再發跟帖!