Anyway, thank you very much for your quick reply. I did it by myself, it seems that I need to hire a lawer to reply all those tough qestions, I am sure I cannot answer those questions at all.
My background is: biomedical reserach
Two MSc
Have been in USA more than 8 years
12 pulications (5 in English, 3 first author)
4 international conference abstrats
one national reward (in China)
about 20 citations
The bad thing is I discontinued research for two years to pursue my second MSc in computer science I have been back to reserach about two years. I guess they may question this change. Anyway, I do not know if I can survive form this crisis