on the Scholastic Aptitude Tests(SATs学习能力 测试) The system of higher education in USAis complex.It comprises four categories of institutions: 1)the university,which may contain (a)several colleges for undergraduate students seeking a bachelor's degree (four-years);(b)one or more graduate schools for those continuing in specialized studies beyond 42. on the Scholastic Aptitude Tests(SATs学习能力 测试). The system of higher education in USA is complex. It comprises four categories of institutions: 1)the university, which may contain (a) several colleges for undergraduate students seeking a bachelor’s degree (four-years); (b) one or more graduate schools for those continuing in specialized studies beyond