2. 外语
  3. For this part, you are allowed 30 minutes to write a short essay. You should start your essay with a brief description of the pi

For this part, you are allowed 30 minutes to write a short essay. You should start your essay with a brief description of the pi

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问题 For this part, you are allowed 30 minutes to write a short essay. You should start your essay with a brief description of the picture and then express your views on the problem of air pollution. You should write at least 120 words but no more than 180 words.
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答案 How to Prevent Air Pollution? The picture above vividly reflects the threats from air pollution in the possible future: Everybody has to carry an oxygen bottle to provide fresh oxygen. Maybe this picture is a little bit exaggerated; however, we cannot neglect the problem of air pollution. As a matter of fact, we have many methods to avoid or decrease the harm of air pollution. First of all, the major source of air pollution comes from industrial pollution. Therefore, we should try to develop new resources to replace the traditional ones. Secondly, automobile exhaust is the second largest source of air pollution, so we should try to take public transportation vehicles as much as possible and try to develop new clean-energy vehicles. Thirdly, we should plant more trees to absorb more carbon dioxide in the air and let trees release more oxygen through the process of photosynthesis. All in all, the air belongs to us all and everybody on the planet should take up the responsibility to protect the environment, to be specific, the air.
解析     文章第一段分析了漫画并引出空气污染这一问题。
    第二段给出了具体而又行之有效的净化空气、减轻空气污染的措施。首先，空气污染主要是由工业污染引起的，因此，需要发展新能源来取代传统的能源；第二，汽车排放的尾气是造成空气污染的第二大污染源，因此我们应该尽量使用公共交通工具并开发使用新型能源的交通工具；第三，我们应该种植更多的树来释放更多的氧气。
    第三段用All in all引出对全文的总结：每个人都应该保护环境。
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大学英语四级

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