2.A-level examination is a standard requirement for students in higher vocational colleges, while B-level examination is slightly less difficult than A-level examination, which is a transitional requirement.

3. The original level 3 is equivalent to "A-level test of college English application ability", and the original level 2 is equivalent to "B-level test of college English application ability".

CET-3 is a proficiency test, and there is no index limit. As long as it meets the requirements, everyone can pass. The purpose of national examination syllabus is to provide a set of standards for college English teaching and testing.

Passing CET-3 is a necessary condition for universities to award undergraduate courses to reference students. In other words, every college student must pass CET-3 if he wants to be promoted to undergraduate.

Refer to Baidu Encyclopedia-English Level 3