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
41
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
•ReadthetextbelowaboutMilair’sletterofapology.•Inmostofthel
Nottoomanydecadesagoitseemed"obvious"bothtothegeneralpublicand
ResalePriceMaintenanceisthenameusedwhenaretaileriscompelledtos
Thecontinuouspresentationofscarystoriesaboutglobalwarminginthepop
坍落度法是通过试验测定混凝土拌和物的流动性,以目测和经验评定混凝土的黏聚性和()
A.常表现为呕血为主,单纯便血少见 B.以呕血为主,也可以便血为主 C.出血
鉴别小原粒细胞白血病与原始淋巴细胞首选试验( )。A.糖原染色 B.铁染色
关于眼膏剂的制备叙述错误的是A.眼膏剂的制备方法与一般软膏剂基本相同 B.包装
对同一航空公司而言,所处阶段不同,代表的都是同一种货币的是( )。 A.开
根据《特种设备安全法》,关于特种设备安全监督管理的说法,正确的是(??)。A.锅
最新回复
(
0
)