Air pollution
Air pollution comes from factories, power stations and cars. Chemicals in the smoke from power stations cause a lot of damage. They can travel hundreds of miles in the wind before falling to the ground in the rain. But this "chemical rain" gradually destroys trees in the forests and kills fish in the lakes. In Germany, over 50% of the country's trees had been damaged by the year 1986.
Time and time again there are serious accidents that pollute the air. In 1986 there was a bad accident at a nuclear power station in Russia. A cloud of radiation crossed the whole of Europe. It is said that 125,000 people died in Russia as a result of illnesses caused by this accident.
In 1984 there was a serious accident at a factory in India and a cloud of dangerous gas covered the town of Bhopal. Over 2,500 people were killed that night, and hundreds of thousands of people were injured. Many of the injured lost their sight.
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本文主要描述了空氣污染的原因和嚴重的空氣污染帶來的後果。文中所引具體資料使文章更具說服力。
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空氣污染
空氣污染來自工廠、電站和汽車。電站發出的煙霧中所含的化學物質造成很大的破壞。這些化學物質可以隨風飄走幾百英裏，然後才隨雨水降落地面。但是這種“化學雨”逐漸摧毀森林裏的樹木，殺死湖泊中的魚。在德國，到1986年止，全國已經有過半數的樹木被摧殘。
空氣被污染的嚴重事故不時地在發生。1986年俄羅斯一座核電站發生過一起嚴重事故。一團帶有輻射的塵埃穿越了整個歐洲。據說，在俄羅斯有125 000人由于這次事故引起的疾病而死亡。
1984年印度一家工廠發生了一起嚴重事故，一團有危險的氣體籠罩著博帕爾市，當晚就有2500多人死亡，有成千上萬人受傷，受傷者中有許多人雙目失明。