1、本网站免费注册后即可以下载，点击开通VIP会员可无限免费下载！
2、资料一般为word或PPT文档。建议使用IE9以上浏览器或360、谷歌、火狐浏览器浏览本站。
3、有任何下载问题，请联系微信客服。
扫描下方二维码，添加微信客服
人教2003课标版《Warming up、Pre-reading、Reading、Comprehending》优质课PPT课件下载
What about the earth ?
Become warmer
What causes the global warming?
It is human activity that has caused global warming.
carbon dioxide
Fossil Fuel (矿物燃料)
coal
oil
gas
global warming
● ● ● ● ● ●
produce
How do greenhouse gases warm the earth ?
Greenhouse gases _____ the heat of the sun and therefore ______ the earth.
It is known as __________________.
Nowadays our earth is becoming _____________________.
greenhouse effect
trap
warm
warmer and warmer
The consequence
Of
global warming
Tsunami
drought