“例题千万道,解后抛九霄.”这是很多学生在平时学习数学时的真实写照.其实,这样学习数学难以达到提高解题能力、发展思维水平的目的.善于在做题中回顾,在解题后进行反思,对方法进行归类、对规律进行总结、对技巧进行拓展,深入挖掘题目的深度和广度,这无疑对提高同学们的能力是大有裨益的.希望同学们在读完本期和下一期的专题文章后,能够重视解后反思,真正将自己所做的每道题目都彻底弄懂、弄通、弄透. "This example is the true portrayal of many students in the usual study of mathematics .In fact, so learning mathematics is difficult to achieve the purpose of improving the ability to solve problems, develop the level of thinking. Recalling that it is of great benefit to raise students' abilities after reviewing problems, classifying methods, summarizing laws, expanding skills, and digging deeper and deeper into the topics, it is undoubtedly of great help to improve their abilities. After reading the current issue and the next issue of the monograph, you can pay attention to the solution after the reflection, and truly understand every topic they have done, get it through.