图 8 3　环境问题案例该图采用环境问题案例的方式 ,说明环境问题的分布特点及对全球环境的影响 ,是本节教材的重点图幅。阅读步骤如下 :该图以未注记国家、大洲、大洋等名称的世界政区图做底图 ,注记了全球各地区重要的环境问题案例。阅读该图时 ,教师首先要引导学生认识世界 Figure 8 3 Cases of Environmental Problems This figure uses the way of environmental problems to illustrate the distribution characteristics of environmental problems and their impact on the global environment. This is the key map of the textbooks in this section. The reading steps are as follows: The map is based on the map of the world’s administrative regions without the names of countries, continents, oceans, etc. and notes important cases of environmental issues in various regions of the world. When reading the map, teachers must first guide students to understand the world