雾霾素材及框架.doc

文章框架: 第一段雾霾简介
第二段自己生活中与雾霾相关的例子
第三段雾霾防治(可从政府、个人等层面)
字数不少于150字,作文截止日期 1月5号,先完成同学先发;
雾霾素材:
Many people take smog as fog, which is wrong.
Smog is a type of air pollution; the word "smog" was made in the early 20th century as a portmanteau of the words smoke and fog to refer to smoky fog. The word was then intended to refer to what was sometimes known as pea soup fog, a familiar and serious problem in London from the 19th century to the mid 20th century. This kind of smog is caused by the burning of large amounts of coal within a city; this smog contains soot particulates from smoke, sulfur dioxide and ponents. Modern smog, as found for example in Los Angeles, is a type of air pollution derived from vehicular emission from bustion engines an