在我国当前乃至今后较长一段时期内 ,铁路运输是客货运量最大的一种运输方式。我国 34个省级行政区中 ,除西藏自治区和澳门特别行政区外都有铁路分布。铁路线纵横交错、密如蛛网 ,历来是高三学生复习的一大难题。为此 ,采用分类、分专题的复习方法 ,不仅能帮助学生识记繁多的铁 During the long period from now to the present in our country, railway transport is the largest transportation method for passengers and freight. Of the 34 provincial-level administrative regions in China, railways are distributed outside the Tibet Autonomous Region and the Macau Special Administrative Region. The criss-crossing of the railway lines and the denseness of the spider web have always been a major problem for the senior students to review. To this end, the use of classification and sub-topic review methods can not only help students learn more about the iron