在历年的中考试题中,许多题目都来源于课本,因此重视对课本习题的挖掘与拓展,对强化双基、开发智力、培养创新能力具有积极的作用.现以人教版《几何》第三册一题为例说明,供大家学习参考. In the mid-term exam questions in the calendar year, many topics have originated in textbooks, and therefore attention has been paid to the exploration and expansion of textbook exercises. It has played a positive role in strengthening the dual-base, developing intelligence, and cultivating innovative abilities. An example of the book is illustrated for reference.