一、习题取材的背景要有鲜明的时代性、生活化、开放性,习题的类型要多样化在必修化学教材中,增加了化学知识与生产、生活等的联系,使学生感到化学就在身边,化学与我们的生活关系密切,学习起来自然亲切,加之必修内容难度降低,更容易激发学生的学习兴趣。社会新闻层出不穷,化学科技一日千里,但教材限于篇幅,不可能面面俱到地及时反映最新的动态,而习题设计者往往能及时关注这些新事、新物,弥补教材的不足并以之创设情境、提供信息命题,使学生充分感受到现代化学和科学技术的魅力,使学生体会到化学是一门 First, the background of the exercises should have a clear background of the times, life, open, the types of exercises to be diversified in compulsory chemistry textbooks, an increase of chemical knowledge and production, life, contact, so that students feel chemistry at your side Chemistry and our lives are closely related to learning natural and cordial, combined with the difficulty of compulsory content is reduced, more likely to stimulate students interest in learning. However, teaching materials are limited in length, and it is impossible to reflect the latest developments in an exhaustive manner. Exercises designers often can pay close attention to these new things and new things in time to make up for the shortage of teaching materials and create situations to provide information Proposition, so that students fully feel the charm of modern chemistry and science and technology, so that students understand chemistry is a