It is not difficult to simulate the mathematics of grade nine in the five-year senior high school entrance examination for three years, because the mathematics of three years in the five-year senior high school entrance examination is centered on the application of basic concepts repeatedly listed in textbooks. As long as you memorize the concept, understand it and apply it to the exercises, there are detailed answers and it is easy to understand. Therefore, it is not difficult to simulate the ninth grade mathematics for three years in the five-year senior high school entrance examination. "Three-year Simulation of Five-year Senior High School Entrance Examination" is published by Education Science Press and Capital Normal University Press. The book is divided into two volumes, full practice+full solution, full solution and other answers.