1998年物理高考试题,不论是从考查知识能力方面,还是从试卷区分度、难度、信度等方面均得到老师、学生的较普遍认同,试卷不回避常规题、成题,整体难度大体可与近几年来高考平均难度相当,整份试卷看,尽管不偏不怪,但并不乏标新立异。例1:选择题第12小题图中两单摆摆长相同,平衡时两摆球刚好接触。现 In 1998, the physics examination questions, whether from the perspective of the ability to examine knowledge or the degree, difficulty, reliability, etc. of the test paper, were generally accepted by the teachers and students. The examination papers did not evade the conventional questions or the questions, and the overall difficulty can be roughly matched. In recent years, the average difficulty of the college entrance examination has been quite considerable. Looking at the entire examination paper, although it is not unfounded, there is no lack of innovation. Example 1: Multiple-choice questions The first two items in the multiple-item graph have the same pendulum length, and the two pendulum balls just touch when they are balanced. Now