四级作文：Air pollution_空气污染

　　在我们平凡的日常里，大家都经常看到作文的.身影吧，作文是从内部言语向外部言语的过渡，即从经过压缩的简要的、自己能明白的语言，向开展的、具有规范语法结构的、能为他人所理解的外部语言形式的转化。写起作文来就毫无头绪？以下是小编整理的四级作文：Air pollution_空气污染，欢迎阅读，希望大家能够喜欢。

　　The picture reflects the air pollution is threats our healthy day by day,everybody has to wear masks to protect themselves from the fog and haze. Therefore,we can not neglect the seriousness of air pollution.

　　As a matter of fact,we have many methods to avoid or reduce the harm of air pollution.On the one hand,the major and largest sources of air pollution come from industrial pollution and automobile exhaust.Therefore,we should try to develop new energy to replace the tradition ones;in addition,public transportation vehicles is our top choice when we go out to doing something.On the other hand,we should plant more trees to absorb more carbon dioxide in the air and let trees release more oxygen through the process of photosynthesis.

　　In brief,the air belongs to us all and everybody on the planet ,to should take the responsibility for protecting the environment,to be specific,the air.