Have you passed the exam outline? Review according to the outline requirements. Make a summary of local simulation questions, such as rational number in the first question and congruent triangles in the first question. Practice the basic questions according to induction, and focus on the exercises given to you by the teacher. It is not recommended to do extra-curricular problems, unless you are weak, you can buy 53 to do this specially. As for the big questions, they are also done according to the teacher's requirements, paying special attention to the combination of geometry and function. The general method is to construct the unknown piecewise function into a known formula, and you can summarize it yourself.

Wish you success!