首页
登录
职称英语
The concept of obtaining fresh water from icebergs that are towed to populat
The concept of obtaining fresh water from icebergs that are towed to populat
游客
2024-05-06
4
管理
问题
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 (47)______ quite seriously by many nations, especially since scientists have warned that the human race will (48)______ its fresh water supply faster than it runs out of food.
Glaciers are a possible (49)______ 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 (50)______ fresh water so immense that it could (51)______ 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 10,000 icebergs that break away from the polar ice caps, more than ninety percent of them from Antarctica.
Huge glaciers that (52)______ 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 (53)______ 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 (54)______ 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 control them and (55)______ 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(传送) 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(脱盐), or (56)______ salt from water.
Word Bank:
A. removing I. approximately
B. stretch J. considered
C. deriving K. similar
D. entirely L. source
E. untapped M. ensured
F. resource N. sustain
G. outgrow O. steer
H. opposite
[br]
选项
答案
L
解析
空格前面的冠词a表示此处需要可数名词单数形式,且与of一起连用。本句意为:Glaciers(冰川)是淡水的一个潜在的“来源”,由此可知词库中符合条件的名词为source。注意resource指“资源”,且常用复数。另外,后一句中的a reservoir of ______ fresh water解释了glacial ice,也表明Glaciers是淡水的一个“来源”。
转载请注明原文地址:https://tihaiku.com/zcyy/3586453.html
相关试题推荐
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopulat
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopulat
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopulat
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopulat
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopulat
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopulat
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopula
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopula
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopula
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopula
随机试题
下面你将听到一段有关中国网购的讲话。[originaltext]Ahugeshoppingrevolutionishappeningin
Manyscientists______thenewdamagetotheforeststobetheresultofhigherl
Thediversityoftropicalplantsintheregionrepresentsaseeminglyinexhausti
关于数字出版合同,说法正确的有()。A.须双方当事人当面签署 B.须明确
投资者进行金融衍生工具交易时,要想获得交易的成功,必须能较准确地预测( )等因
Thechangeinthatvillagewasmiraculou
去甲肾上腺素对血管作用错误的答案是A、冠脉收缩 B、肾脏血管收缩 C
2020年我国货物进出口总额321557亿元,对“一带一路”沿线国家进出口总额9
王先生现有资产50万元,投资一项预期年收益5%的投资项目,复利计息,两年后王先生
某利润中心的年营业收入为50000元,已销产品的变动成本和变动销售费用为2
最新回复
(
0
)