题目内容
17．Drinking water is so important for good health．When in school，you learned what water is made up of．（31）GHowever，what you may not have learned is how much water you need in order to be healthy．As we all know，60% to 70% of the body is water．Your body needs water to control body temperature and to carry nutrients to all parts of the body．（32）FWhen you are very active，for example，playing football，you'll lose more water．If you don't drink water at once，it will do harm to your health．
（33）C Take your weight in pounds and divide that number in half．That gives you the number of ounces of water that you need to drink per day．For example，if you weigh 160pounds，you should drink at least 80ounces of water per day．
Twenty percent of your water need will come from the foods you eat．（34）B Water is the best choice．Sodas have a lot of sugar in them，so if you drink sodas，you may take in more calories than you need．（35）D
A．Why do you need to drink water？
B．The rest should come from what you drink．
C．How much water do you need to drink every day？
D．Juices are good because they have lots of nutrients．
E．Now let's take a look at where your water need comes from．
F．Water can also play an important part in protecting your body．
G．You also learned how it is important to our body．
分析 本文主要讲述人体需要多少水分才能保持身体健康．
解答 31-35 GFCBD
31 G 根据上文提到When in school，you learned what water is made up of当你在学校时，你就已经知道水是由什么组成了，故选G 你也学到它对我们身体的重要性．
32 F 根据上文提到Your body needs water to control body temperature and to carry nutrients to all parts of the body你的身体需要水来控制身体的温度，把营养带到身体的各个部分，故选F 水在保护你的身体方面起重要的作用．
33 C 根据下文提到Take your weight in pounds and divide that number in half．That gives you the number of ounces of water that you need to drink per day．你的体重按磅来称，把这个数字分成一半，这就你每天需要喝水的量，故选C项；
34 B 根据上文提到Twenty percent of your water need will come from the foods you eat你所需要的百分之二十的水来自你的吃的食物，故选B 其它的来自你所喝的水；
35 D 根据上文提到Sodas have a lot of sugar in them，so if you drink sodas，you may take in more calories than you need碳酸饲料里面有许多的糖，因此如果你喝的话，你可能会摄入很多的热量，故选D项；
点评 做七选五题目时要注意以下规则：1．放进去通顺，这一点是基础．凡不通顺的必错无疑；2、选项中有单词、词组、句子成分或与所选答案所在段内容重合；
3、选项与其上句或下句之间有必然的逻辑关系；4、选项全部内容都属于正确答案所在段．有时备选答案中可能含有甲乙两项内容，这时，只有当甲和乙都归属于本段时，答案才是正确的．
