The task of being accepted and enrolled in a university or college begins early for some students. Long 【B1】 they graduate from high school, these students take special 【B2】 to prepare for advanced study. They may also take one or more examinations that test how 【B3】 prepared they are for the university. I9 the final year of high school, they 【B4】 applications and send them, with their student records, to the universities which they hope to 【B5】 Some high school students may be 【B6】 to have an interview with representatives of the university; Neatly 【B7】 , and usually very frightened, they are 【B8】 to show that they have a good attitude and the 【B9】 to succeed. When the new students are finally 【B10】 , there may be one more step they have to 【B11】 before registering for classes and 【B12】 to work. Many colleges and universities 【B13】 an orientation program for new students. 【B14】 these programs, the young people get to know the 【B15】 for registration and student advising, university rules, the 【B16】 of the library and all the other 【B17】 services of the college or university. Beginning a new life in a new place can be very 【B18】 . The more knowledge students have 【B19】 the school, the easier it will be for them to 【B20】 to the new environment. However, it takes time to get used to college life.

A．as
B．after
C．since
D．before