拯救地球(Saving the earth) 课题: 拯救地球(Saving the earth) 年级: 高中二年级第一学期第九单元第33、34课 目的: 通过学习,使学生了解地球上土地荒漠化、空气和水的污染及动植物生存环境恶化的情况,培养学生以积极的态度善待周围的环境,从而为保护我们整个地球的环境做出自己的贡献。 工具: 世界地图或地球仪 The area of desert in the world is growing every year. Many parts of the world, which once had large popluations and produced plenty of crops
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