在历年的高考中,涉及人口问题的试题大多以人口统计图表的形式呈现相关信息。人口统计图表是对人口信息数据进行统计、整理后绘制而成的图形或表格,其最大的优点是呈现的信息简明扼要,往往能把抽象的内容形象化、直观化,具有随时间变化的特点。常见的人口统计图有线性图、柱状图、散点图、圆形图、金字塔图、三角形图、四边形图、合成图 In the college entrance examination over the years, most of the questions concerning population issues are presented in the form of demographic charts. Demographic charts are statistics or statistics of population information. Drawings are made of graphics or tables. The main advantage of demographic charts is that the presented information is concise and concise, and can often visualize and abstract the contents of the abstraction over time . Common demographics are linear, histogram, scatter, circular, pyramid, triangle, quadrilateral, composite