赶紧让学校再给你发一个I20。 会很麻烦!
Entering the U.S. - Port of Entry
A visa allows a foreign citizen coming from abroad, to travel to the United States port-of entry and request permission to enter the U.S. Applicants should be aware that a visa does not guarantee entry into the United States. The Department of Homeland Security, U.S. Customs and Border Protection (CBP) officials have authority to permit or deny admission to the United States. Student visitors must have their Form I-20 in their possession each time they enter the United States.
YOU MUST HAVE YOUR I20 WITH YOU!!!
不能~~~
没有I20表是不能入境的