haihongyuan.com
海量文库 文档专家
全站搜索:
您现在的位置:首页 > 小学教育 > 小学英语小学英语

环境问题口语课件

发布时间:2014-04-30 13:41:48  

Evironmental Problems
1、Environmental pollution 2、 Environmental protection

3、Sustainable development

air pollution

water pollution

drought

flood

desertification

garbage disposal

global warming

Discuss : Are they just caused by nature?


网站首页网站地图 站长统计
All rights reserved Powered by 海文库
copyright ©right 2010-2011。
文档资料库内容来自网络,如有侵犯请联系客服。zhit326@126.com