近年来 ,物理习题中出现了一种新的类型题——“理论联系实际”题 .由于此类型题源范围广 ,选材灵活 ,立意新颖 ,要求学生有较强的分析问题和解决问题的能力 .因此 ,学生解答此类题目感到比较困难 ,形成了教学上的难点 .为了突破这一难点 ,本文结合实例对这种类型题的解法作一 In recent years, a new type of question has emerged in the physics exercises - “theory links with practice”. Due to the wide range of sources of this type of questions, flexible selection of materials and innovative ideas, students are required to have a strong ability to analyze problems and solve problems. Therefore, it is difficult for students to answer such questions and forms a difficult teaching point. In order to overcome this difficulty, this article combines examples to solve this type of problem.