课后思考练习题是教材编委会针对篇章特点设置的知识要点、能力训练点和教学的重难点,是学生学习过程中落实基础、提升能力的前沿阵地,也是教师备课时的指南针.教材习 After-school thinking exercises are the key points, ability training points and teaching difficulties for the textbook editorial committee. They are the frontline for students to implement the basic skills and enhance their abilities during the learning process. They are also a compass for teachers when preparing lessons.