题目内容
5．Drinking water is so important for good health．When in school，you learned what water is made up of．（36）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（37）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．
（38）CTake 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．（39）BWater 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．（40）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 本文是一篇选句填空阅读，属于说明文，喝水对身体健康非常重要．在学校，你学到了什么水是由组成的．本文以此展开谈论，主要讲述了喝水对身体健康的重要性．
解答 36．G 考查文章上下文内容联系以及句意理解．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．
37．F 考查文章上下文内容联系以及句意理解．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．
38．C 考查文章上下文内容联系以及句意理解．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．
39．B 考查文章上下文内容联系以及句意理解．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．
40．D 考查文章上下文内容联系以及句意理解．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．
点评 本文是一篇选句填空阅读，题目主要考查文章上下文内容联系以及句意理解．做题时学生应仔细阅读原文，把握文章主要内容，联系文章上下文内容并结合所给选项含义，从中选出正确答案，一定要做到有理有据，切忌胡乱猜测．
