中考试题有较多反映实际生活的问题,解决数学应用题,要根据题目所给文字和图表信息把实际问题抽象成数学问题,合理建模,再利用函数、方程、不等式等知识,结合相关数学思想方法作答.一、一次函数应用题例1(2012年甘肃)衬衫系列大都采用国家5.4标准号、型(通过抽样分析取得平均值),“号”指人的身高,“型”指人的净胸围,码数指衬衫的领围(领子大小),单位均为:厘米. The middle school exam questions have more practical life problems. To solve the math problems, we abstract the actual problems into mathematical problems based on the texts and the chart information given by the subject, reasonably model them, and then use the knowledge of functions, equations, inequalities and other relevant mathematics Answer: First, the application of a function 1 (Gansu, 2012) most of the shirts series using the national standard 5.4, type (obtained by sampling analysis of the average), “number” refers to the height, “type ”Refers to the person’s net bust, yardage refers to the shirt collar (collar size), units are: cm.