2．简要分析产生这种现象的原因；

　　3．试提出改善空气质量的措施。

　　注意：1.可参照图表所给提示做必要的发挥；

　　2．词数100左右；

　　3．开头已经写好，不计入总词数。

　　Nowadays，the air quality in China has raised widespread concern.As is indicated in the picture，

　　参考范文

　　Nowadays，the air quality in China has raised widespread concern.As is indicated in the picture,46.02% of the residents are dissatisfied with the present quality of the air in cities and the percentage of people exposed to bad air is 57.99%.What’s more，the pie chart demonstrates that only 10.67% of cities can enjoy high quality air while cities suffering from bad air make up nearly nine tenths.

　　It is vital to find out the contributing factors.Vehicles sending large quantities of poisonous gases，in my mind，are a major source of air pollution.Furthermore，factories that release a great deal of smoke are also responsible for the poor air quality.Besides，burning materials like coal or oil for homes and offices is another major contributor to air pollution.

　　Personally，to better the air quality，the government and the common citizens should make joint efforts.Riding and walking are wise options for public travels.Meanwhile，effective laws are supposed to be made to guarantee good air quality.

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