What exactly do you mean by all four levels?
The full-true questions in CET-4 refer to the simulated questions of full-true questions in CET-4. Generally speaking, college students apply for CET-4 and CET-6, which is the encyclopedia's explanation of CET-4. The scope of CET-4 mainly covers all the contents of CET-4 stipulated in the syllabus, except for oral English and translation. In order to ensure the reliability of the test paper, objective multiple-choice questions are used in other test questions except short essay writing.