首页
登录
职称英语
[originaltext] Among global warming’s most frightening threats is the predic
[originaltext] Among global warming’s most frightening threats is the predic
游客
2024-03-12
43
管理
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 the key player in this scenario is the West Antarctic ice sheet, a Brazil-size mass of frozen water that is much as 7000 feet thick. Unlike floating ice shelves which have little impact on sea level when they break up, the ice sheet is anchored to bedrock, will 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 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 Engleheart, a co-author from the California Institute of Technology says , ’’The West Antarctic ice sheet disappeared once and can disappear again. ’’
Questions 9 to 12 are based on the passage you have just heard.
9. What is one of the most frightening threats of global warming according to the passage?
10. What do scientists disagree on?
11. What is the latest information revealed about the West Antarctic ice sheet?
12. What do the scientists’ latest findings suggest?
选项
A、The West Antarctic region was once an open ocean.
B、The West Antarctic ice sheet was about 7,000 feet thick.
C、The West Antarctic ice sheet was once floating ice.
D、The West Antarctic region used to be warmer than today.
答案
A
解析
选项是关于the West Antarctica的情况的。听力篇章最后提及,这个地方曾是一片大洋,而并非冰川。因此A)为正确选项。
转载请注明原文地址:https://tihaiku.com/zcyy/3526359.html
相关试题推荐
[originaltext]Thetimeis9o’clockandthisisMarianSnowwiththenews.
[originaltext]It’salwaysfuntowriteaboutresearchthatyoucanactually
[originaltext]It’salwaysfuntowriteaboutresearchthatyoucanactually
[originaltext]Amongglobalwarming’smostfrighteningthreatsisthepredic
[originaltext]Amongglobalwarming’smostfrighteningthreatsisthepredic
[originaltext]Amongglobalwarming’smostfrighteningthreatsisthepredic
[originaltext]Amongglobalwarming’smostfrighteningthreatsisthepredic
[originaltext]FlorenceHayesisajournalistfortheGreenVilleJournal,t
[originaltext]FlorenceHayesisajournalistfortheGreenVilleJournal,t
[originaltext]Somehowtheoldmaleandfemalestereotypesnolongerfit.Me
随机试题
ThehistoryofindigenouseducationprovisionthroughoutAustralia’sremote
TheInternetMayHaveBeatenTraditionalInstitutionsTheno
Participationinhighschoolsportsisnotaconstitutionalright.Rather,i
Adultswhohadbeenfedplentyoffruitwhentheywerechildrenarelesslik
乙酰胆碱作用的消失主要是通过A.突触前膜摄取 B.效应器细胞摄取 C.突触部
下面叙述中不正确的是()。A.建筑物自动化中型系统的监控点数为161-651
下列水电解质失衡最容易发生休克的是A:低容量性低钠血症(低渗性脱水) B:低容
个人经常项目项下外汇收支分为( )。A.经营性外汇收支和非经营性外汇收支 B
下列关于押汇业务的表述,错误的是()。A:进口押汇中,银行以信托收据的方式向进口
A.医生尊重患者是指满足患者的一切要求 B.医生的行为使某个患者受益,但却给别
最新回复
(
0
)