One possible version：

These days, there has been a thick haze in many areas of China.The distance we can see is very near. It separates us from the sun for many days.And the terrible weather has last a long time. It does harm to our everyday life.The traffic is affected and the polluted air may cause many kinds of diseases.So why there is a thick haze now? There are many reasons:The increasing number of the cars, the pollution from factories and many people burn straw to cook or make warm and so on.

Now the most important things for us to do is to make measures to protect us from the haze. First, We should try to take public traffic tools like metro and bus instead of driving a car.Second,factories should be stopped from pour waste water into the river. Third we shouldn't use disposable plates and bowls.Above all, everybody shoud take action to do something to save our environment.

题目分析：本篇写作话题为非常热门的雾霾问题，题中要求从问题、危害、原因、措施四个方面来表达。写作的内容要把提示的内容整合起来，同时也要表达一些自己的观点。整合信息，需要用到一些过渡的短语活句子来使文章连贯，另外，要讲究分层分段，做到层次分明。很重要的一点，全文要有重心，本文的重心在于呼吁人们保护环境。

【亮点说明】例文结构紧凑，连贯性好。大体分成两部分，第一部分主要介绍了雾霾的现象危害和原因，引起读者的重视。第二部分为根据第一部分的分析，我们可以采取哪些措施。最后呼吁大家每个人都应该行动起来保护我们的环境。文章中用到许多的连贯词来联系全文，同时也用到了first second 等等的词是文章层次文明，一目了然。