2018年12月六级听力原文-2018年12月六级听力时文：ObtainingFreshWaterfromIcebergs

【#四六级考试# 导语】在英语"听、说、读、写"四大技能中，听力排在首位，听力的重要性不言而喻。日常复习多关注听力话题，就能提高听力成绩。下面®文档大全网英语四六级频道特别整理了《2018年12月英语六级听力常考时文：Obtaining Fresh Water from Icebergs》一文，希望对大家备考有所帮助。

　2018年12月大学英语六级听力常考时文盘点

　　英语六级听力常考时文：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.

　　2018年12月大学英语六级听力常考时文盘点

2018年12月六级听力时文：Obtaining Fresh Water from Icebergs.doc

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