所在位置：查字典英语网 > 小学英语 > 四年级小学英语 > 四年级小学英语作文 > 球变暖的危机

球变暖的危机

发布时间：2020-06-01 编辑：查字典英语网小编

With the development of economy， more and more greenhouse gases are being discharged into the air。 CO2 makes up about 70% of the greenhouse gases， which is considered to be one of the greatest causes of global warming。 It has harmful effects， causing the sea level to rise and many natural disasters to strike。

So we must take effective measures to save our planet。 First， we should use more clean energy and less coal and oil。 Second， we should go to work on foot or by bus instead of driving a car if possible。 Third， we should plant more trees， because plants can turn CO2 into oxygen。 More importantly， we should form the habit of saving energy in our daily life。

查看全部

上一篇：盗版软件该被禁吗？

下一篇：一个也不能少》的简介