有两个每件相同的人同时去了美国,两年后,其中的一个人获得了由美国政府颁发的绿卡,而另外一个却没有获得。后者当时很奇怪,询问身边的人也都莫名其妙。他去了有关部门去咨询,工作人员打开电脑,输入他们的身份证号码以后,材料就全 There were two identical individuals who went to the United States at the same time. Two years later, one of them got a green card issued by the U.S. government and the other did not. The latter was strange at the time and it was baffling to ask people around them. He went to the relevant department to consult. After the staff opened the computer and entered their ID number, the materials were all