六级课程经典
零基础适用HOT
去试听
六级1对1
定制化
核心词 背词计划
0元
听力 提升必看
0元
阅读 冲刺200+
0元
写作 高分模板
0元
历年真题大全
免费
十天搞定 六级词汇
热门
1V1速成方案VIP
考研真题集免费
考研择校&科普
全套
Obtaining Fresh Water from Icebergs
1.What did scientists warn about fresh water? It will be run out of faster than ..
2.What's the difference between icebergs and sea ice? Icebergs are formed entirely ...
3.What is mysterious about the movement of icebergs? Sometimes they move in a direction ...
4.What is one of technical matters in making use of icebergs? Preventing their ...
The concept of obtaining fresh water from icebergs that are towed to populated areas and arid regions of the world was once treated as a joke more appropriate to cartoons than real life. But now it is being considered quite seriously by many nations, especially since scientists have warned that the human race will outgrow its fresh water supply faster than it runs out of food. Glaciers are a possible source of fresh water that has been overlooked until recently. Three-quarters of the Earth’s fresh water supply is still tied up in glacial ice, a reservoir of untapped fresh water so immense that it could sustain all the rivers of the world for 1,000 years. Huge glaciers that stretch over the shallow continental shelf give birth to icebergs throughout the year. Icebergs are not like sea ice, which is formed when the sea itself freezes, rather, they are formed entirely on land, breaking off when glaciers spread over the sea. As they drift away from the polar region, icebergs sometimes move mysteriously in a direction opposite to the wind, pulled by subsurface currents. Because they melt more slowly than smaller pieces of ice, icebergs have been known to drift as far north as 35 degrees south of the equator in the Atlantic Ocean. To corral them and steer them to parts of the world where they are needed would not be too difficult. The difficulty arises in other technical matters, such as the prevention of rapid melting in warmer climates and the funneling of fresh water to shore in great volume. But even if the icebergs lost half of their volume in towing, the water they could provide would be far cheaper than that produced by desalinization, or removing salt from water.
英语六级必备资料下载
英语六级必备工具：测测你的词汇量能过六级吗
大学英语六级寒假全程班
资料下载
2022年大选英语四级词汇完整带音标
发布时间：2020-04-15关注四六级小助手服务号
回复【过级词汇】获取
刘一男六级核心词汇完整版
发布时间：2020-04-15关注四六级小助手服务号
回复【过级词汇】获取
新东方英语口语终极教程word版
发布时间：2020-04-15关注四六级小助手服务号
回复【口语提升】获取
大学英语六级：练口语及单词lesson1-9
发布时间：2020-04-15关注四六级小助手服务号
回复【口语提升】获取
新东方在线[四六级王牌团队]典藏笔记
发布时间：2019-10-25关注四六级小助手服务号
回复【典藏笔记】获取
英语六级过级备考资料：经验+计划+语法
发布时间：2019-10-25关注四六级小助手服务号
回复【过级经验】获取
大学英语六级阅读解题经验技巧
发布时间：2019-10-25关注四六级小助手服务号
回复【阅读礼包】获取
英语四级写作诵读193经典句
发布时间：2019-10-25关注四六级小助手服务号
回复【写作指导】获取
英语六级听力讲义汇总资料
发布时间：2019-10-25关注四六级小助手服务号
回复【听力礼包】获取
英语六级口语考试练习小积累
发布时间：2019-10-25关注四六级小助手服务号
回复【口语提升】获取
大学英语六级核心高频词汇
发布时间：2019-10-25关注四六级小助手服务号
回复【过级词汇】获取
关注四六级小助手服务号回复【典藏笔记】获取
关注四六级小助手服务号，
获取学习资料
推荐阅读
历年大学英语六级听力真题答案及解析（汇总） 新东方在线英语六级频道特整理历年大学英语六级听力真题、答案及解析等考试内容供大家参考
2021年12月英语四级听力真题答案及解析（汇总） 新东方在线英语六级频道特整理2021年12月大学英语六级听力真题、答案及解析等考试内容
新东方在线英语六级频道特整理2021年12月大学英语六级听力真题、答案及解析等考试内容供大家参考，预祝大家高分通过大学英语六级考试!2
2021年12月英语六级考试真题-听力讲话 报道 讲座(第二套) 【Section C】 Recording 1(16) The Caribbean islands are divided
2021年12月英语六级考试真题-听力篇章(第二套) 【Section B】 Passage 1Whether it& 39;s in the hands of animated polar
资料下载
关注四六级小助手服务号
回复【过级词汇】获取
关注四六级小助手服务号
回复【过级词汇】获取
关注四六级小助手服务号
回复【口语提升】获取
关注四六级小助手服务号
回复【口语提升】获取
关注四六级小助手服务号
回复【典藏笔记】获取
关注四六级小助手服务号
回复【过级经验】获取
关注四六级小助手服务号
回复【阅读礼包】获取
关注四六级小助手服务号
回复【写作指导】获取
关注四六级小助手服务号
回复【听力礼包】获取
关注四六级小助手服务号
回复【口语提升】获取
关注四六级小助手服务号
回复【过级词汇】获取
阅读排行榜
相关内容
京ICP证050421号 京ICP备05067669号-2 京公网安备11010802017616号 网络视听许可证0110531号 京网文(2016)1303-163号
Copyright © 2011- 新东方教育科技集团有限公司, All Rights Reserved
违法和不良信息举报电话: 010-81401500 举报邮箱: sec@xdfzx.com 网上有害信息举报专区
专项提升公开课
网友热搜