美国留学签证的时候 签证官一般都会问哪些问题？

美国留学签证的时候 签证官一般都会问哪些问题？ 你好！回复如下，请了解！谢谢！
第一类：留美动机
Why are you going to America? / which university do you chose to study ? which major ?
Why do you choose this school? Why this major ?
Why not study in China?
How do you know this university? Can you tell me something about this university ?
Is there any agency help you while applying? Is there any agency help you for the interview?
How many university did you apply ? how many of them give you admission?
第二类：关于工作和学习背景
What do you do now?
Where did you graduate in China? What’s you major? When did you graduate?
Why not continue your study in china? Why not finish your bachelor degree in china then go to USA for your master’ degree.
You have some work experiences, do you? / What’s you position in the company? How long have you been working? What’s your salary? / why not continue your university study after graduate from high school?
Does your company support your study in US?
第三类：关于留学资金的条件
How much does your school cost per year?
Do you have scholarship?
How much have you prepared for your American study? Who will pay for your study in US? So can you tell me something about your supporter?
Please show me your bank book/bank statement.
第四类：关于归国计划
What will you do after you graduate?
Why not stay and find a job in US?
Have you ever been to USA or other country ?
If I can’t give you visa, what will you do ?