【正文】
Unit 7 What39。s the highest mountain in the world? 單元能力提升七 單元能力提升七 Unit 7 What39。s the highest mountain in the world? Water is the __1__ of all the things we eat and drink. Not many people understand this but __2__ true. The human body can go without __3__ for a long time. We39。ve got many examples for this. Yet two __4__ three days without water can usually make people __5__. Man can39。t live __6__ water. A lot of people don39。t understand how __7__ water the human body needs to work well, and many people, especially young people, Ⅰ . 完形填空 單元能力提升七 do not drink enough, __8__ in very hot weather. Our body has mostly water, about 65% to 75%. That is to say about two thirds of our body __9__ water. When we do sports, some of the water will get away from our body. __10__ we don39。t drink some water, we won39。t have enough water. And if we don39。t have enough water, we39。ll feel tired and many of us will get ill. So you know how important water is to us. 單元能力提升七 ( ) B. mo