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Passage Two
Mountains are about one-fifth of the world's land surface area. (13) Mountains are a very important part of the earth's ecology and environment. They contain important eco-systems, such as forests. They provide the most important resources for about one-tenth of the world’s population. Mountains also provide goods and services to more than half the people in the world.
Melting snow from mountains provides water for hundreds of millions of people. For example, the Himalayan Mountains supply drinking water for the people of India. Mountains are also important areas for winter sports. Millions of people visit countries in Europe to ski down mountains every year.
Mountains are important to the world. (14) But there are problems, involving mountains in many places. People who live in mountain areas are usually poor. There is often very little economic activity in these areas. Mountain environments are sometimes not supervised very well. When this, happens, eco-systems, supporting plants and animals suffer.
In some areas, too many trees are cut down. When it rains heavily, water can rush down the sides of mountains and flood villages and cities. Serious flooding kills many people and animals every year. In addition, earthquakes can cause hillsides to come crashing down in powerful landslides.
(15) The United Nations wants to help more people learn about the importance of mountains as well as their problems. Many activities including research and development projects have been planned for next year. The UN Food and Agriculture Organization is leading this special recognition of mountains.
13. Why are mountains a very important part of the earth's ecology and environment?
14. What are the problems involving mountains?
15. What has the United Nations done to raise people's awareness of the importance of mountains?
文章二
山脉占据地球陆地面积的五分之一。山脉是地球生态和环境的重要组成部分。它包含了重要的生态体系，比如说森林。它们还为地球上约十分之一的人口提供最为重要的资源，并为地球上超过半数的人提供商品和服务。
山脉上的融雪为无数人提供了水源。比如，喜马拉雅山脉为印度人提供了饮用水源。山脉也是冬季运动的重要地区。每年有数百万人去欧洲，只为在高山上滑雪。
山脉对世界来说很重要。但是很多地区的山区也存在一些问题。住在山区的人口生活贫困。经济活动少。山区环境监管不力。出现这些问题时，维持生态系统的植物和动物都会遭殃。
在某些地区，树木过度砍伐。降雨量较多时，雨水顺山体流下，淹没村庄和城市。每年都会有一些严重的洪涝导致人类和动物死亡。此外，地震会引起强大的山体滑坡。
联合国希望能够帮助更多的人了解山脉的重要性和它们存在的问题。研究和开发项目在内的很多活动都被计划在明年开展。联合国粮农组织领导此次特殊的山脉认知活动。
问题13 为什么山脉是地球生态和环境的重要组成部分？
问题14 山脉有哪些问题？
问题15 联合国做了哪些事来引起人们对山脉重要性的认识？
译文属可可原创，仅供学习和交流使用，未经允许不得转载
