一、原题呈现
Let"s take a minute to think about the water we use. The human body is 60% water and we need to drink lots of water to be healthy. When we are thirsty we just go to the kitchen and fill a glass with clean water.
31．For example, farmers, who produce the food we eat, use water to make the plants grow. When we turn on a light or switch on a TV or a computer we use energy and we need water to produce this energy.
The truth is that we are lucky enough to have clean water whenever we want，but this is not the case for many people around the world.32．That"s around one in 10 people in the world. If we drink dirty water，we can catch diseases from the bacteria and become ill. Every year over 500，000 children die from diarrhea(腹泻)from dirty water. That"s around 1，400 children every day！Also，in some countries children walk many kilometres every day to get water.33．Therefore，they don"t have time to learn how to read or write and don"t get an education.
34．On this day every year，countries around the world hold events to educate people about the problems of dirty water and that clean water is something that everyone should have around the world. At one school in the UK，children between the ages of 10 and 15 walk 6km with six litres of water.35．People give them money to do this and all the money helps get clean water to as many people as possible around the world.
A．We use water indirectly too.
B．Every system in our body depends on water to function.
C．It is to inspire people to learn more about water-related problems
D．If children walk many hours a day to get water，they can"t go to school.
E.Did you know that around 750 million people do not have clean water to drink？
F.In 1993 the United Nations decided that March 22nd is the World Day for Water.
G.In this way，they know how it feels to walk a long distance carrying heavy bottles.
二、分析
这是一篇说明文。主要说明了水是我们生活中非常重要的能源，而世界上很多人并不像我们这样幸运能喝到干净的水。世界上大约有7.5亿人没有干净的水喝，每年有50多万儿童死于脏水引起的腹泻。就此联合国决定3月22日为世界水日，并在当天举办活动来教育人们关于脏水的问题，让人们知道清洁的水是全世界每个人都应该拥有的。
31．根据下文For example, farmers, who produce the food we eat, use water to make the plants grow. When we turn on a light or switch on a TV or a computer we use energy and we need water to produce this energy.（例如，生产我们吃的食物的农民，使用水使植物生长。当我们打开电灯或电视或电脑的开关时，我们使用能源，我们需要水来产生这种能源）可知下文是在列举人们间接使用水的例子，故A选项“我们也间接地用水。”符合上下文语境，故选A。
32．根据下文That"s around one in 10 people in the world.（那大约是世界上十分之一的人）可推知本句为说明世界上没有干净水喝的人数。故E选项“你知道大约有7.5亿人没有干净的水喝吗?”符合上下文语境，故选E。
33．根据上文Also，in some countries children walk many kilometres every day to get water.（而且，在一些国家，孩子们每天要走很多公里去取水）中walk many kilometres every day to get water可对应到D选项中walk many hours a day to get water，故D选项“如果孩子们每天走很多小时去取水，他们就不能去上学。”符合上下文语境，故选D。
34．结合下文On this day every year，countries around the world hold events to educate people about the problems of dirty water and that clean water is something that everyone should have around the world.（每年的这一天，世界各国都会举办各种活动，让人们了解脏水的问题，让他们知道清洁的水是全世界每个人都应该拥有的）是在说明世界水日当天的活动，故可知本句为说明世界水日的设立时间，故F选项“1993年，联合国决定3月22日为世界水日。”符合上下文语境，故选F。
35．根据前文At one school in the UK，children between the ages of 10 and 15 walk 6km with six litres of water.（在英国的一所学校，10到15岁的孩子负重6升水来步行6公里）可推知本句承接上文继续说明这一做法的意义是让孩子们了解带着沉重的瓶子走很长的距离是什么感觉。故G选项“通过这种方式，他们知道带着沉重的瓶子走很长的距离是什么感觉。”符合上下文语境，故选G。
三、方法讲解
七选五做题技巧。做题的时候边读边做。各个问题附近的句子都需要重点阅读，圈画一些线索，再从选项中寻找相关的特征词用来判断正确答案。带入排除法也是一种很好的方法。另外，如果发现有一题拿不准的，先跳过，先做容易的能做出的题，直到读完整篇文章。至此，文章的要点和主旨、各个段落之间的逻辑关系应该基本就能清楚了。然后再回过去做之前不确定的题目。如第三小题，根据上文Also，in some countries children walk many kilometres every day to get water.（而且，在一些国家，孩子们每天要走很多公里去取水）中walk many kilometres every day to get water可对应到D选项中walk many hours a day to get water，故D选项“如果孩子们每天走很多小时去取水，他们就不能去上学。”符合上下文语境，故选D。
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