Ninth grade, grade B, math, five-year senior high school entrance examination, three-year simulation exercise, not bad. Junior high school mathematics "Three-year simulation of five-year senior high school entrance examination" is a workbook, which is very useful for students who are about to take the senior high school entrance examination. After learning junior high school knowledge, you can brush this workbook, which is relatively thick and covers the real questions of the senior high school entrance examination in the past five years and the simulated questions of the senior high school entrance examination in the past three years. Very suitable for the ninth grade, practice skillfully and increase adaptability.