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
walk on grass
care for wild animals
leave rubbish here and there
plant more trees
pick flowers
In our daily life, we should face more environmental problems.
Can you say something about them?
cities, pollute,
health problems
factories, the land and the air, dead
In our daily life, we should face more environmental problems. Can you say something about them?
cut down, millions of,
take away the earth,
become desert
拿走
In our daily life, we should face more environmental problems.
Can you say something about them?
oxygen
a special kind of oxygen
called “ozone” (O3)
氧气
a very big hole in the ozone layer,
too much harmful radiation from the sun
臭氧层
放射，放射物
n.洞，坑
Learning tip:
Association method(联想法) is a good way to remember words well.
v.出现，形成
n.种类，形式