典型的例题、习题、练习题往往是中考题的母体.纵观近几年的中考,很多题都来源于课本的例题和习题.由于它们的地位特殊,备受中考命题者的青睐.下面以人教版义务教育教材《几何》第三册P145练习题第2题为例,说明加强课本习题研究的重要性. The typical examples, exercises, and practice questions are often the mothers of the exam questions. Throughout the recent exams, many questions have come from textbook examples and exercises. Because of their special status, they are favored by the proctors. For example, the second issue of the PEP exercise book “Geometry” in the third edition of the textbook on compulsory education of the People’s Education Press explains the importance of strengthening research on textbook exercises.