课本是学生获得知识的重要途径,也是教师教学的重要工具.课本中收集了大量的典型问题,它们的推广、转化和延伸,往往是编写高考试题的主要源泉,也是对学生创新能力的考量.因此我们必须充分重视对课本中典型问题的探讨,认真挖掘题目中的丰富内涵,通过提出和解答这些问题,增强学生 Textbooks are an important way for students to acquire knowledge, and they are also an important tool for teachers’ teaching. Textbooks collect a large number of typical problems. Their promotion, transformation and extension are often the main source of writing high-test questions, and they are also the consideration of students’ innovative ability. Therefore, we must pay full attention to the discussion of typical problems in textbooks, carefully dig out the rich connotations of the topics, and enhance students by asking and answering these questions.