Knowledge reserve: 1, defining the main tasks of mid-term review. 2. Refine the objectives and improve the review quality. From basic knowledge to basic principles, we must make it clear and understand, and then we must do some exercises and simulations. 3. Sort out the important methods, highlight the key points, and the more fully prepared, the better for the exam. Overcoming nervousness: All exams are the basic knowledge of the students who first try, and the psychological quality of the students is re-examined. The better the psychological quality, the better people will play, and if they are too nervous, they will make some low-level mistakes.