With time going by and science developing, there are some problems of the environment (become) more and more serious. Most of these problems are caused by human (activity).

    Many years ago, we might not hear of haze(雾霾). But now most of us more than know what haze is and learn the huge disaster caused by haze. For the past two years, haze has appeared in many cities, our life and health (affect) by haze.

    Recently, the topic of air pollution has again attracted more and more attention since pollution haze, a kind of weather, (appear) frequently in our city. When pollution haze came, the whole city was covered with suspended particles(悬浮颗粒), can be breathed into our body causing serious problems to our health. According reports, the haze attacked many large cities, such as Beijing, Tianjin, Chengdu and so on. All of the phenomena(现象) tell us that it's time to protect and improve our environment. Compared with the bad effect of the pollution haze, a green and clear environment rather than anything else turns to be important role and an urgent issue in our daily (life). Meanwhile we just have an earth. we don't try to protect our common hometown, we will die off as dinosaurs.

    Some of us think we human beings are so great that we can control nature. I just want to say how stupid the idea is! We shouldn't be the master of nature. And we should be a friend of nature so that we can survive a long time! If it is necessary, we should make some related laws to control pollution haze. And we can take example by England, because they (have) the same problem long time ago.