1, there are basic questions and promotion questions for highlight optimization. Basic questions are suitable for students with average grades, and can be used to consolidate the foundation, check and fill gaps, and review knowledge points. The improved problem is suitable for students with good grades, helping such students improve their academic accomplishment and learn more flexible problem-solving methods.

2. Huanggang's examination papers have always attached importance to education, and students' basic knowledge is very solid. It is also very important that Huanggang students are indispensable in every international mathematical Olympics, and Huanggang students are indispensable on the night of winning the gold medal.