“建模”是物理学上一个重要的研究方法 ,是认识事物的本质和规律的第一步 ,是建立物理理论的基础 .近几年的高考命题强调以能力立意 ,因而出现了大量以生产、生活实际、新科技、新成果以及社会热点问题等为背景材料的题目 .解答这类问题 ,要求学生必须具备运用所学物理知识 ( “Modeling” is an important research method in physics. It is the first step in understanding the nature and laws of things and is the basis for establishing physical theories. The proposition of college entrance examinations in recent years emphasizes the ability to develop, and thus there has been a lot of production. , practical life, new technologies, new achievements, and social hot issues are the topics of background materials. To answer these questions, students must have the knowledge to use the physics they have learned (