“机械波”是“考试说明”中所列 B级要求的知识点 ,也是这部分教学内容的难点 .近年来高考卷和模拟卷的命题者注意挖掘课本内容中考查因素进行命题 ,这不仅有利于基础知识教学 ,而且对实施素质教育 ,提高学生的科学素质起到了良好的导向作用 .本文介绍几道挖掘课本内涵的有关 “Mechanical wave” is the knowledge point for the requirements of Class B listed in the “Exam Description”, and is also a difficult point in this part of the teaching content. In recent years, the propositioners of the college entrance examination volume and simulation volume have paid attention to tapping the factors in the examination of textbook content to make propositions, which is not only beneficial to The teaching of basic knowledge has played a good guiding role in the implementation of quality education and improvement of students’ scientific quality. This article describes several issues related to the exploration of the connotation of textbooks.