与旧教材相比，新教材的课后习题一改过去旧教材中每课后均附有大量问题的特点，仅针对性地设置几个与教学目标有关的题目，既减轻了学生的作业负担，同时也将老师从处理课后习题的繁重劳动中解脱出来。少而精的特点使新教材赢得了广大师生的好评。经过一段时间的教学尝试，笔 Compared with the old textbooks, the new textbook’s after-school exercises have changed the characteristics of many problems in the old textbooks after each lesson. Only a few topics related to the teaching objectives are targeted to reduce the workload of students. At the same time, it also freed the teacher from the heavy work of handling exercises after class. The small and refined features make the new textbooks have won praises from teachers and students. After a period of teaching attempts, the pen