做题不能追求数量,而要讲究质量,要学会以点带面,多角度理解,只有这样才能跳出题海的怪圈．选择好题,选择成功!为此,我们特推荐以下习题,希望同学们能够融会贯通,学以致用,从多种角度分析思考,积极探索解题规律,摸索出获得最优解的途径． Do not pursue the number of questions, but pay attention to quality, we must learn to point and face, multi-angle understanding, the only way to jump out of the sea of ​​the strange circle. Choose a good question, choose success! To this end, we specifically recommend the following exercises, hope that the students will be able to integrate, apply their knowledge, analyze from many angles of thinking, actively explore the law of problem solving, and explore ways to obtain the optimal solution.