According to the inquiry of senior three. Com, undergraduate B section usually refers to the enrollment batch section of the national unified examination for enrollment of ordinary colleges and universities, and the second section refers to the second batch of ordinary colleges and universities. In some provinces, the undergraduate section B may include two schools, but there are also other types of schools, so it is not possible to equate the undergraduate section B with two schools in general. Like undergraduate A, undergraduate B is the division of college entrance examination enrollment batches. Section A usually includes national key universities such as 985, 2 1 1, and section B includes provincial schools with good enrollment and outstanding achievements in a certain subject in previous years. Section B of undergraduate course is also described as parallel volunteer, which is used to make up for the problem of high elimination rate of two books. Equivalent to the second choice, but with priority. This means that if the candidate's score reaches the requirements of the B section of the undergraduate course, but does not reach an admission score, there is still a chance to be admitted, because the B section school will have certain admission priority.