题型：阅读选择 题类： 难易度：普通
辽宁省铁岭市西丰振兴中学2024年中考一模英语试题
Mesa Verde National Park, in Colorado, America, has many "cliff dwellings"— places that are built into the cliffs（悬崖）where people once lived. They look almost impossible to get to. Who lived in them, and why did they live there?
People lived there about 800 years ago. Americans call them the Ancestral Puebloans（古普韦布洛人的祖先）. They grew food on the mesa （平顶山）, the flat land on top of the cliffs. They kept animals on the mesa too. They travelled over the mesa to trade with each other. Why didn't they build homes on the mesa?
One reason was the weather. Winters were getting colder and colder. The mesa was flat and open. There was no protection from the cold winds. Most of the cliff dwellings face south or south-west from the cold north wind. Another reason people did not live on the mesa is that there were more and more people to feed. Homes on the mesa would use land that was needed to grow food. Some people say a third reason was for safety. They say different groups of Ancestral Puebloans were fighting each other. The cliff dwellings were hard to get into. so they kept the people who lived there safe. Other people don't believe it. They say the groups tract ed too much to have seen fighting. Everyone agrees that these people were the skillful builders, who used every bit of space in the cliffs to make their homes.
How can we tell whether a drink is healthy or not? Recently, Shanghai began to grade drinks with four levels? A, B, C, and D．Level A and B drinks are healthier, while level C and D drinks have much sugar and fat.
Level A | 330ml soda | 0 sugar |
Level B | 330ml sports drink | ≈9g to 24g sugar |
Level C | 250ml energy drink | ≈32g sugar |
Level D | 500ml milk tea | ≈45g to 65g sugar |
The more, the better?
Some students have energy（能量）drinks before doing sports or taking exams. Energy drinks have a lot of sugar and caffeine（咖啡因）. They could make one feel more excited. But remember not to drink too much at a time.
Do you know?
The World Health Organization（世界卫生组织）says children should have no more than 25g sugar a day.
Are sports drinks necessary?
·Having sports drinks sometimes is OK. They give us vitamins and minerals（矿物质）.
·There is no need for them when you do sports for less than two hours.
·For people with heart problems, it is best not to have sports drinks.
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