首页
登录
职称英语
The concept of obtaining fresh water from icebergs that are towed to popula
The concept of obtaining fresh water from icebergs that are towed to popula
游客
2024-05-06
3
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【C1】______ quite seriously by many nations, especially since scientists have warned that the human race will【C2】______ its fresh water supply faster than it runs out of food.
Glaciers are a possible 【C3】______ of fresh water that has been overlooked until recently. Threequarters of the Earth’s fresh water supply is still tied up in glacial ice, a reservoir of【C4】______ fresh water so immense that it could 【C5】______ 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【C6】______ 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【C7】______ 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【C8】______ 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【C9】______ 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【C10】______ salt from water.
A) removing
B) stretch
C) deriving
D) entirely
E) untapped
F) resource
G) outgrow
H) opposite
I) approximately
J) considered
K) similar
L) source
M) ensured
N) sustain
O) steer [br] 【C5】______
选项
答案
N
解析
此处需要及物动词原形作谓语。词库中符合条件的动词有stretch,sustain和steer,而根据前面的so immense可知此句意为“冰川的水量极大,足以维持地球上所有河流”,因此sustain符合句意,为正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3586363.html
相关试题推荐
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopulat
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopulat
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopulat
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopulat
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopulat
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopula
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopula
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopula
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopula
Theconceptofobtainingfreshwaterfromicebergsthataretowedtopopula
随机试题
WhytheEarth’ssurfacetemperaturehasn’twarmedasexpectedoverthepast
CPU可以直接访问主存,而不能直接访问辅存。()
天然气民用大气式燃烧器的几何尺寸及有关参数如下:喷嘴直径dj=1.4mm,喷嘴流
提出“音乐教育的基本任务是发展学生的音乐素质,将音乐制作与音乐欣赏作为音乐实践,
运用动态控制原理进行建设工程项目投资控制,首先进行的工作是()。A.分析并确
一般药物的有效成分通过肾排泄小于多少时,可用常规剂量A.15%B.18%C.20
2020年,我国粮食种植面积11677万公顷,比上年增加70万公顷。其中,稻谷种
在中国史、亚洲史上,()有着深远的意义和影响,它大大地拓宽了古人的地理视野,
2015年中央一号文件提出“五个重大”。其中,下列哪一项属于当前必须面对的重大挑
下列关于资产支持证券的表述,不正确的是()。A.2005年12月15日资产证券化
最新回复
(
0
)