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
Polar bears hunt seals from sea ice, but could drown if forced to swim long distances in open water. Satellite photos【B1】______b
Polar bears hunt seals from sea ice, but could drown if forced to swim long distances in open water. Satellite photos【B1】______b
admin
2013-10-17
70
问题
Polar bears hunt seals from sea ice, but could drown if forced to swim long distances in open water. Satellite photos【B1】______by America’s space agency, NASA, illustrate the fearful【B2】______ to such bears. An image shows the amount of Arctic Sea ice in 1979. Another image shows the record【B3】______set this year on September 16th. The shrinkage is【B4】______to an area greater than Texas, an impossible distance for even the【B5】______polar bear to swim.
Scientists say fossil fuels are increasing carbon【B6】______ in the atmosphere. This not only warms the oceans, but threatens biodiversity in cold and warm waters alike. As the carbon dioxide is increased in the atmosphere, a high【B7】______, about 40 percent of that, goes back into the ocean, and so it’s increasing the acid【B8】______of the ocean and that’s threatening fisheries.
Scientists at a recent conference at Columbia University’s Earth Institute said【B9】______. This is because a northern route, though still risky, reduces the distance between Europe and Asia by about 6,500 kilometers.
Countries bordering the Arctic are not the only ones with interests there.【B10】______; that’s very clear for natural resources, for fishing, for a variety of reasons. Energy supplies are among those reasons. Scientists say more open water in the Arctic means more gas from water and extreme weather elsewhere.
The Arctic is far from most of the world’s population.【B11】______.
【B7】
Polar bears hunt seals from sea ice, but could drown if forced to swim long distances in open water. Satellite photos(36)released by America’s space agency, NASA, illustrate the fearful(37)threat to such bears. An image shows the amount of Arctic Sea ice in 1979. Another image shows the record(38)minimum set this year on September 16th. The shrinkage is(39)equivalent to an area greater than Texas, an impossible distance for even the(40)mightiest polar bear to swim.
Scientists say fossil fuels are increasing carbon(41)emissions in the atmosphere. This not only warms the oceans, but threatens biodiversity in cold and warm waters alike. As the carbon dioxide is increased in the atmosphere, a high(42)proportion, about 40 percent of that, goes back into the ocean, and so it’s increasing the acid(43)content of the ocean and that’s threatening fisheries.
Scientists at a recent conference at Columbia University’s Earth Institute said(44)less ice is likely to draw some shipping away from the Panama Canal. This is because a northern route, though still risky, reduces the distance between Europe and Asia by about 6,500 kilometers.
Countries bordering the Arctic are not the only ones with interests there.(45)There certainly will be interest in the Arctic from nations that don’t touch physically on the Arctic; that’s very clear for natural resources, for fishing, for a variety of reasons. Energy supplies are among those reasons. Scientists say more open water in the Arctic means more gas from water and extreme weather elsewhere.
The Arctic is far from most of the world’s population.(46)However, scientists caution that distance is no guarantee people will be spared the effects of warming in the planet’s northernmost regions.
选项
答案
proportion
解析
此处应填入一个名词,由前面的形容词high修饰。proportion意为“比例”。
转载请注明原文地址:https://kaotiyun.com/show/urc7777K
0
大学英语四级
相关试题推荐
Thestarsareusuallyactorsandactresses.Mostpeopledonotevenlookatthenameofthedirectororproducer,exceptone-Ste
A、Hedidn’tenjoyJane’scompanybefore.B、Janehasbeentoohardworking.C、Janeshouldchangeherjob.D、Janedoesnotaccompan
Kidswhooftenstruggleoverwordsand______(理解课文有困难)findlittleenjoymentintheprocessofreading.
PolitebehaviorisimportantintheAustraliansociety."Please"and"thankyou"arewordswhichareveryhelpfulwhen【C1】_____
A、35.B、130.C、10000.D、113B细节题。本文介绍美国的电话情况。听到“FederalExpresslinks130majorAmericancitiesand10000surroundingcommunitie
Onedayapoliceofficermanagedtogetsomefreshmushrooms.Hewassopleased【C1】______whathehadboughtthathe【C2】______
Onedayapoliceofficermanagedtogetsomefreshmushrooms.Hewassopleased【C1】______whathehadboughtthathe【C2】______
A、Goodreadersseemtoenjoyreading.B、Almostallpoorreaderscanmakeprogress.C、Causesofpoorreadingaredifficulttofin
A、Newtrafficrules.B、Trafficjamsonhighways.C、Airtrafficconditions.D、Roadconditions.C
A、Meetingeachotherattherailwaystation.B、Complainingaboutthepoorservice.C、DiscussingtheirplanforNewYear’sDay.D
随机试题
有以下程序段:struetst{intx;int*y;}*pt;inta[]={1,2},b[]={3,4};struetstc[2]={10,a,20,b};pt=c;以下选项中表达式的值为11的是()。
根据《出版管理条例》,任何出版物不得含有的内容有()等。
理论上,一国国际收支出现顺差时,股价()
叶女士,23岁,记不清末次月经时闯,停经8个月左右,从未做过产前检查,下列检查无助于判断其胎儿成熟度的是()
脑中氨的主要去路是
A.小管周牙本质B.小管间牙本质C.小球间牙本质D.前期牙本质E.骨样牙本质矿化程度最高的牙本质是()
为实现测量过程所必须的测量仪器、软件、测量标准、标准物质及辅助设备的组合称为()。
512002×20032003-2003×20022002的值是()。
Inaperfectlyfreeandopenmarketeconomy,thetypeofemployer—governmentorprivate--shouldhavelittleornoimpactonthe
Thequestionisworth________again.
最新回复
(
0
)