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
A、The whole Antarctic region will be submerged. B、Some polar animals will soon become extinct. C、Many coastal cities will be cov
A、The whole Antarctic region will be submerged. B、Some polar animals will soon become extinct. C、Many coastal cities will be cov
admin
2011-01-10
48
问题
Among global warming’s most frightening threats is the prediction that the polar ice-caps will melt, raising sea level so much that coastal cities from New York to Los Angles to Shanghai will be flooded.
Scientists agree that key player in this scenario is the West Antarctic ice sheet, a Brazil-size mass of frozen water that is as much as 7, 000 feet thick. Unlike floating ice shelves which have little impact on sea level when they break up, the ice sheet is anchored to bedrock well blow the sea surface. Surrounded by open ocean, it is also vulnerable, but Antarctic experts disagree strongly on just how unstable it is.
Now, new evidence reveals that all or most of the west Antarctic ice sheet collapsed at least once during the past 1. 3 million years, a period when global temperatures probably were not significantly higher than they are today. And the ice sheet was assumed to have been stable. In geological time, a million years is recent history. The proof, which was published last week in Science, comes from a team of scientists from Uppsala University in Sweden and the California Institute of Technology who drilled deep holes near the edge of the ice sheet. Within samples collected from the solid substance lying beneath the ice,they found fossils of microscopic marine plants which suggest that the region was once an open ocean, not solid ice. As Herman Englehart, a co-author from the California Institute of Technology says, "the West Antarctic ice sheet disappeared once, and can disappear again. "
26. Q: What is one of the most frightening threats of global warming according to the passage?
27. Q:What did scientists disagree on?
28. Q:What does the latest information reveal about the West Antarctic ice sheet?
29. Q:What does the scientists’ latest finding suggest?
选项
A、The whole Antarctic region will be submerged.
B、Some polar animals will soon become extinct.
C、Many coastal cities will be covered with water.
D、The earth will experience extreme weathers.
答案
C
解析
对全球变暖的威胁最可怕的预测之一就是极地冰盖融化,海平面上升,将海滨城市淹没。
转载请注明原文地址:https://jikaoti.com/ti/7FZFFFFM
0
大学英语六级
相关试题推荐
Directions:Forthispart,youareallowed30minutestowriteapassageofatleast150wordsinthetitleofWhoShouldbeRes
A、Prestigeschoolsmaynotbebetter.B、Thequalityisaboutthesameiseveryschool.C、Prestigeschoolsarealwaysthebest.D
A、TheydrankaspecialbeveragemadefromJapaneseherbs.B、Theyhaduncookedfishthenightbeforethegame.C、Theyhadamassa
A、Angry.B、Hungry.C、Tired.D、Dissatisfied.C关键词汇:I’mbeat;表示该男士听从了建议,准备睡觉了。因此对应态度应为tired。
TheWorldTradeOrganizationwasestablishedin1995.It【B1】______outoftheGeneralAgreementonTariffsandTradeorGATT.GA
Millionsofyoungpeoplearecreatingblogs.Millionsofothersarereadingthem.Theword"blog"isashortwayofsayingWebl
Eachautumn,teachersspendmanyhourswritingreferencesinsupportoftheirpupils’universityapplications,anduniversityad
A、Heistheman’sfriend.B、Tomakethewomanhappy.C、Topleasetheman’swife.D、TopleaseHarryhimself.C女士说“我真受不了Harry总是支配谈
Ithasbeen______thatseniorofficialswereinvolvedina$20milliondrugsdeal.
Yourobscureremarkswould__________doubtsconcerningyourtrueintentions.
随机试题
A.丙酮酸激酶B.丙酮酸羧化酶C.苹果酸酶D.磷酸烯醇式丙酮酸羧激酶催化反应的底物或产物中都没有CO2的是
患者,男,24岁。左上后牙咀嚼痛1个多月,近1周加剧。近日牙齿出现松动,完全不能触动。疼痛剧烈,不能入睡,发热、头痛。检查发现左上后牙牙龈红肿,触痛明显,左上第一磨牙远中牙合面龋,无探痛,叩痛(+++)数天后患者疼痛减轻,局部肿胀明显,此时属病变的
蒸汽供热系统中的疏水阀,具有的主要作用是()。
任何单位,必须经公安交通管理部门和()的批准,才能按规定占用和挖掘城市道路。
关于65(或70)岁到期定期寿险,下列说法正确的是( )。
某中外合作经营企业合作合同规定,外方合作者以现金和机器设备出资,占总出资额的60%,中方合作者以厂房和土地使用权出资,占总出资额的40%;合作企业合作期内所得收益首先全部用于偿付外方出资,在外方出资偿付完毕后的合作期限内,合作双方各按50%比例分配收益;
下列各项中,不符合车船税有关征收管理规定的是()。
试述反垄断法所禁止的滥用市场支配地位行为的表现形式。
现行的公历是下列哪一部古代历法演变而来的?
()请勿拍照()禁止骑车()行李存放处()禁止通行
最新回复
(
0
)