(1) The division of a batch of undergraduate courses into Class A and Class B is two different batch stages. The first batch of institutions are divided into Class A, Class A 1 and Class B: Class A is the national key institutions and institutions determined by the Ministry of Education to implement the "2 1 1 Project" and the "985 Project", and the institutions designated by the former State Education Commission to participate in the first batch of admissions; A 1 is one of the first A-class institutions jointly run by Chinese and foreign countries. Class B is an ordinary college with good enrollment in all provinces for many years.

(2) Distinguishing between Class A and Class B is not to lower the requirements of the batch. Therefore, in addition to a preparatory course, the first batch of A and B undergraduate courses also implement the minimum filing control line.

(3) The enrollment institutions are different. A batch of undergraduate students in stage A refers to the institutions that have implemented the "2 1 1 Project" as determined by the national key institutions and the Ministry of Education, and the institutions designated by the former State Education Commission to participate in the first batch of admissions; The institutions admitted in stage B are general institutions with a good source of enrollment for many years in the province, and there is an enrollment institution in the preparatory course. The first batch of A-stage undergraduate admissions in colleges and universities does not include 1 matriculation enrollment.