注意相似习题的点滴之差安徽舒城县干汊河中学王国银每年高考试卷中，都有不少试题大部分学生认为是已经做过、教师讲过的＂熟题＂，解答者在处理这类问题时，往往由于受思维定势的影响，对题中变化的条件视而不见，套用已知情景相似题（即认为做过的题）的解题方法、分析... Pay attention to the difference between similar exercises. Anhui Province, Shucheng County, Gan River Middle School Wang Guoyin Each year in the examination paper, there are a lot of questions Most students think it has been done, the teacher said “problems”, the answerer is dealing with this In the case of a class problem, it is often due to the influence of the mindset, turning a blind eye to the conditions of the change in the subject, applying the problem solving method and analysis of a similar problem (that is, the problem considered to be done) in a known situation.