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
2024-05-28
31
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 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、How humans are to cope with global warming.
B、How unstable the West Antarctic ice sheet is.
C、How vulnerable the coastal cities are.
D、How polar ice impacts global weather.
答案
B
解析
研究南极的专家对于南极冰原到底有多脆弱看法不一。
转载请注明原文地址:https://tihaiku.com/zcyy/3609293.html
相关试题推荐
[originaltext]M:Ijustcalledthetravelagency,it’sallset.OnJunefirst,
[originaltext]M:Ijustcalledthetravelagency,it’sallset.OnJunefirst,
[originaltext]M:Ijustcalledthetravelagency,it’sallset.OnJunefirst,
[originaltext]AccordingtoanewstudydoneattheMedicalschooloftheUn
[originaltext]AccordingtoanewstudydoneattheMedicalschooloftheUn
[originaltext]AccordingtoanewstudydoneattheMedicalschooloftheUn
[originaltext]Therearemanywaystoloseweight.Firstofall,startsmall
[originaltext]M:Ifthetrafficwasn’theldupforsolong,Iwouldhavebeent
[originaltext]M:Ifthetrafficwasn’theldupforsolong,Iwouldhavebeent
[originaltext]M:Ifthetrafficwasn’theldupforsolong,Iwouldhavebeent
随机试题
With2005fastbecoming"theyearofthenaturaldisaster",itistimetor
[A]growing[B]trade[C]host[D]rarely[E]faster[F]tourism[G]claiming[H]slower[I]pol
Youaregivenaseriesofpictures.Yourtaskistoseetheirrelationshiptoea
根据交通行业规定,桥梁用扁形塑料波纹管,产品代号为SBG,长轴方向内径为41mm
A.从脏走手 B.从头走足 C.从头走手 D.从手走头 E.从足走腹手三
某旧商业用房的面积为20000m2,业主与某公司签订了租期为10年的租赁合同,约
(2016年真题)某男,48岁,突患急性支气管炎,症见身热口渴,咳嗽痰盛,喘促气
一次拦断河床围堰法的导流泄水建筑物包括( )。A.明渠导流 B.底孔导流
当低压内缸就位找正、( )完成后,低压转子吊入汽缸中并定位后,再进行通流间隙调整
发生额试算平衡的直接依据是()。A、资产=负债+所有者权益 B、收入-费用=利
最新回复
(
0
)