江苏高考选择题的第九题一般难度较大。本文紧扣试题,从高中物理和大学物理的角度深刻分析题目,有助于中学教师更高层次地理解题目并在此基础上改编题目,达到在教学过程中一题多变,学生能触类旁通的目的。 Jiangsu college entrance examination multiple-choice questions the ninth problem is generally more difficult. This article closely linked to questions, from high school physics and university physics point of view of the profound analysis of the problem, help high school teachers to understand the problem at a higher level and on this basis to adapt the subject, to achieve a problem in the teaching process changes, students can be analogy purpose.