2012gre写作例子:ObtainingFreshwaterfromicebergs

2012-01-19 13:57:07
GRE写作部分将重点考察考生有针对性地对具体考题做出反应的能力,而非要求考生堆砌泛泛的文字。具体说来,这些重点关注的能力包括:1、 清楚有效地阐明复杂观点;2、 用贴切的事理和事例支撑观点;3、考察/验证他人论点及其相关论证;4、支撑一个有针对性的连贯的讨论;5、控制标准书面英语的各个要素。写作部分将联合考察逻辑推理和分析写作两种技能,并且将加大力度引进那些需要考生做出有针对性的回应的考题,降低考生依赖事前准备(如背诵)的材料的可能性。

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. Floating on the oceans every year are 7,659 trillion metric tons of ice encased in 10000 icebergs that break away from the polar ice caps, more than ninety percent of them from Antarctica.

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.

感谢您阅读《ObtainingFreshwaterfromicebergs 》一文,出国留学网(liuxue86.com)编辑部希望本文能帮助到您。
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GRE写作部分将重点考察考生有针对性地对具体考题做出反应的能力,而非要求考生堆砌泛泛的文字。具体说来,这些重点关注的能力包括:1、 清楚有效地阐明复杂观点;2、 用贴切的事理和事例支撑观点;3、考察/验证他人论点及其相关论证;4、支撑一个有针对性的连贯的讨论;5、控制标准书面英语的各个要素。写作部分将联合考察逻辑推理和分析写作两种技能,并且将加大力度引进那些需要考生做出有针对性的回应的考题,降低考生依赖事前准备(如背诵)的材料的可能性。

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. Floating on the oceans every year are 7,659 trillion metric tons of ice encased in 10000 icebergs that break away from the polar ice caps, more than ninety percent of them from Antarctica.

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.

感谢您阅读《ObtainingFreshwaterfromicebergs 》一文,出国留学网(liuxue86.com)编辑部希望本文能帮助到您。
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