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写作题目 In many cities and all over the world, there is a serious shortage of water supplies. What are the causes of and solutions to the scarcity of water resource? Write an essay of about 400 words. You should supply an appropriate title for your essay. In the first part of your essay you should state clearly your main argument, and in the second part you should support your argument with appropriate details. In the last part you should bring what you have written to a natural conclusion or make a summary. Marks will be awarded for content, organization, grammar and appropriateness. Failure to follow the above instructions may result in a loss of marks . 写作思路 本题属于“问题解决型”，需要按照问题、原因/后果、解决方法三步骤来进行结构安排 。水资源缺乏是人类面临的一大挑战，本题要求先分析原因，再提出解决方法，其中原因和解决办法必须是两点或两点以上。在第一段，我们可以先大体介绍一下水资源缺乏的现状及带来的可怕后果；随后用一到两段来具体分析水资源缺乏的原因，如人口爆炸、环境污染、或是地球本身淡水资源的匮乏等等；接下来再用一段提出解决方法，如海水淡化、节约用水、保护环境等；最后做出总结。 On Water Scarcity Water, as one of the most important natural resources, is facing serious scarcity. A recent survey conducted by Greenpeace revealed that over two thirds of the nations in the world were afflicted with severe water shortage. Hence, it is essential that we ascertain the causes of this phenomenon and identify the effective solutions. | 
