近来 ,《中学化学教学参考》连载了田宇老师翻译的一套美国中学化学教材中的习题。仔细阅读题目后 ,从中得到一些有益的启示。下面谈谈自己对这套习题的看法。一、习题的组成结构和特点1.习题的组成结构这套习题按章节编写 ,每节习题组成大体分为七个部分 :1课文中的问题 ;2练 Recently, the “Reference to Chemistry Teaching in Middle Schools” serialized the exercises in the American middle school chemistry textbook translated by Tian Yu. After reading the questions carefully, some useful inspirations will be obtained from them. Let’s talk about my own views on this exercise. First, the composition and characteristics of the exercises 1. The composition of the exercise structure This set of exercises written by chapter, each exercise consists of seven parts: 1 in the text of the problem; 2 practice