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全球氣候變暖是目前人類面臨的最大環境問題。請你根據以下提示，寫一篇英語短文，為“節能減排”獻計獻策。 來源：中國環保聯盟 http://www.hntv520.com
背景：溫室氣體大量排放
后果：海平面急劇上升，自然災害頻繁
措施：1多使用清潔能源 2以步代車 3….4…
要求：1. 短文必須包括表格中的所有內容要點，可適當發揮，措施中3、4點由考生自由發揮；
2. 詞數：100左右。
With the development of economy, more and more greenhouse gases are being discharged into the air. CO2 makes up about 70% of the greenhouse gases, which is considered to be one of the greatest causes of global warming. It has harmful effects, causing the sea level to rise and many natural disasters to strike.
So we must take effective measures to save our planet. First, we should use more clean energy and less coal and oil. Second, we should go to work on foot or by bus instead of driving a car if possible. Third, we should plant more trees, because plants can turn CO2 into oxygen. More importantly, we should form the habit of saving energy in our daily life.
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