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
48
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
【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://kaotiyun.com/show/0O67777K
0
大学英语六级
相关试题推荐
Theloudestoutcryaboutpovertyseemedtocomeinthewealthiestcountrybyfarintheworld.Accordingtomostcalculations,【C
A、Teotihuacan,oncethehomeof200,000people,wasthecenterofalargeempire.B、Manyarchaeologistsarefascinatedbytheru
A、It’sneartheMexicoCity.B、It’sinGuatemala.C、It’sstretchedfromtheplainsofcentralMexicotothemountainsofGuatema
A、Exposingoneselftothetargetlanguage.B、Attendingagoodlanguageprogram.C、Comingupwitharegularstudyplan.D、Develop
A、Reluctant.B、Hesitated.C、Pleased.D、Embarrassed.C用完餐后女士告诉男士希望分开结账。男士说没问题,他会马上把各自的账单拿过来。由此可见,男十很乐意满足女士的请求。故答案为C)。
Teenagersarespendingmoremoneythanever.Justlastyear,31.6millionteensspent155billion,accordingtotheNorthbrook,
Icebergsareamongnature’smostspectacularcreations,andyetmostpeoplehaveneverseenone.Avagueairofmystery【C1】_____
Icebergsareamongnature’smostspectacularcreations,andyetmostpeoplehaveneverseenone.Avagueairofmystery【C1】_____
Icebergsareamongnature’smostspectacularcreations,andyetmostpeoplehaveneverseenone.Avagueairofmystery【C1】_____
Icebergsareamongnature’smostspectacularcreations,andyetmostpeoplehaveneverseenone.Avagueairofmystery【C1】_____
随机试题
国外最早的教育著作是()教育家()的《论演说家的教育》,也叫《()》。
下列关于细胞冻存及复苏过程的描述错误的是
确诊风湿病的依据是()。
下列工程项目中无须办理施工许可证的是()。
商业银行开展个人理财业务有下列()情形之一的,由银行业监督管理机构依据《银行业监督管理法》的规定实施处罚。
下列各项中,工业企业通过“其他应付款”科目核算的是()。
【2014年安徽.判断】教育现代化就是指学校教育设备和信息载体的现代化。()
在采用收取手续费方式委托代销商品时,委托方确认商品销售收入的时点为()。
在VisualFoxPro中,将只能在建立它的模块中使用的内存变量称为【】。
在进行逻辑设计时,将E-R图中实体之间联系转换为关系数据库的()。
最新回复
(
0
)