问题
填空题
______和______在人体内经氧化放出热量，为机体活动和维持恒定体温提供能量，______是维持生命活动的备用能源．
答案
在人体内的六大营养素中，糖类、油脂、蛋白质可以氧化分解放出能量，特别是糖类和油脂，糖类是体内主要的供能物质，油脂是人体内的备用能源．
故答案为：糖类；油脂；脂肪．
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______和______在人体内经氧化放出热量，为机体活动和维持恒定体温提供能量，______是维持生命活动的备用能源．
在人体内的六大营养素中，糖类、油脂、蛋白质可以氧化分解放出能量，特别是糖类和油脂，糖类是体内主要的供能物质，油脂是人体内的备用能源．
故答案为：糖类；油脂；脂肪．
| 短文改错。 | |
| The village was always very quietly .The people living there were busy about working in their fields during the day and went to bed early at night, tiring after a long day 's hard work. All of them had lived in a village for all their life and had never left for less than one day at a time.On these days how they left, they got up early in the morning .They filled with their cart of fruit ,vegetables and sheeps, and went to the market in the town beyond their valley .They come back in the evening with some money and perhaps a present for their children. That is their life－hard and simple, but not unhappy. | 1. _____ 2. _____ 3. _____ 4. _____ 5. _____ 6. _____ 7. _____ 8. _____ 9. _____ 10. _____ |