首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
The concept of obtaining fresh water from icebergs that are towed to populated areas and arid regions of the world was once trea
The concept of obtaining fresh water from icebergs that are towed to populated areas and arid regions of the world was once trea
admin
2013-06-02
40
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
选项
答案
J
解析
此处需要填入动词的过去分词与is being一起构成句子谓语。本句开头的But now表明该句与上文的…was once treated as…形成对比关系,因此该句的谓语意思与treat“认为”相近。由此可知词库中符合条件的过去分词为considered。
转载请注明原文地址:https://kaotiyun.com/show/Td67777K
0
大学英语六级
相关试题推荐
A、Theyareeverywhereandtasty.B、Foodisnottastybecauseofthem.C、TheyspoilthefoodinBritain.D、Theymakefoodtasteb
A、Becauseheisabusdriverwhodoesn’thavethatmoney.B、Becausehethoughtitwasamadactionwhichwastedtimeandmoney.
Idon’t______(认为说出真相是明智的),becauseithurtsheralot.
Becauseaheadacheisnotadisease,itwillnotcauseseriousinfluenceonourdailylife.Smokersareeasytosufferfrominf
Becauseaheadacheisnotadisease,itwillnotcauseseriousinfluenceonourdailylife.Thedrugsusedtopreventmigraines
Becauseaheadacheisnotadisease,itwillnotcauseseriousinfluenceonourdailylife.Takingenoughcaffeinecanhelpto
Icebergsareamongnature’smostspectacularcreations,andyetmostpeoplehaveneverseenone.Avagueairofmystery【C1】_____
Icebergsareamongnature’smostspectacularcreations,andyetmostpeoplehaveneverseenone.Avagueairofmystery【C1】_____
Icebergsareamongnature’smostspectacularcreations,andyetmostpeoplehaveneverseenone.Avagueairofmystery【C1】_____
随机试题
大客车倒车时遇到这种情况怎样做以保证安全?(图3.9.2)
系统总体设计不包括()
鸦片战争后,提出“师夷之长技以制夷”思想的是( )
患者,男,55岁。胸部CT扫描示近右肺门区有一分叶状软组织肿块,并伴有右上肺不张,右肺上叶支气管狭窄,纵隔内见肿大淋巴结,最可能的诊断为
早产儿,生后3天,食欲差,哭声低,测体温34.5℃,下肢出现硬肿,皮肤发凉,心音低钝,心率100次/分。其首优的护理诊断为
根据《中华人民共和国会计法》的规定,各单位采用的会计处理方法,前后各期应一致,一律不得改变。()
根据以下资料。回答16-20题。2008年工业固体废物综合利用量大约是2004年的:
庸俗:文章
设从键盘输入一个整数的序列:n,a1,a2,…,an,其中n表示连续输入整数的个数。在(1)的基础上将此二叉树上的各整数按降序写入一磁盘文件中。
金汇兑本位制
最新回复
(
0
)