所在位置：查字典英语网 > 大学英语 > 四级大学英语 > 四级大学英语写作 > 四级暑期天天练写作必备范文4

四级暑期天天练写作必备范文4

发布时间：2016-03-02 编辑：查字典英语网小编

　　4. Air Pollution

　　Air pollution is one of the major problems of the modern world. A great deal of energy is needed to run the factories of modern industrial nations. Automobile, trains, planes and busses need energy, too. Nearly all of this energy is produced by burning fuels. The burning produces wastes, some of which remain in the air, causing air pollution.

　　周雷：如何做到四级英语与考研同步复习

　　Scientists are finding ways to stop air pollution especially in big industrial areas and densely-populated cities. They are studying new ways of generating electricity that may be less damaging to the environment. In the meantime, many power plants are being modernized to give off less polluted material. Also, engineers try to design and locate new power plants to do minimum damage to the environment.

　　However, it may be that we still have a long way to go before we have a clean world. Nearly all of the countries are trying hard to prevent and control air pollution. There indeed seems to be no end to tasks that environmentalists will be required to do. People will continually find new ways to control pollution.

点击显示

上一篇： 四级暑期天天练写作必备范文9

下一篇： 四级写作必背佳句3