四級暑期天天練寫作必備范文示例

　　4Air 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.

　　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.

【四級暑期天天練寫作示例】相關(guān)文章：

四級暑期天天練寫作（通用24篇）07-11

寫作初練作文2篇06-09

四級英語寫作方法09-17

留學(xué)四級寫作作文（通用13篇）11-24

忙碌的重要性英語四級寫作經(jīng)典范文06-29

練毛筆作文04-04

練教學(xué)方案12-29

怎么練氣功11-15

練口才的經(jīng)典的語句10-26

半命題作文“換一種-”寫作示例范文（通用27篇）10-28