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
2023-08-09
112
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、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
听力篇章中间提及科学家意见不一的地方:冰原到底有多不稳定。本题是个细节题,考生在听力过程中要集中注意力。
转载请注明原文地址:http://tihaiku.com/zcyy/2910097.html
相关试题推荐
[originaltext]W:ThisisLisaMeyerintheWBZnewsroom,talkingwithMikeBass
[originaltext]W:ThisisLisaMeyerintheWBZnewsroom,talkingwithMikeBass
[originaltext]AmericanvisitorstoEastAsiaareoftensurprisedandpuzzledby
[originaltext]AmericanvisitorstoEastAsiaareoftensurprisedandpuzzledby
[originaltext]AmericanvisitorstoEastAsiaareoftensurprisedandpuzzledby
[originaltext][16]Theprivatemotorvehiclehasgivenusafreedomourancesto
[originaltext][16]Theprivatemotorvehiclehasgivenusafreedomourancesto
[originaltext]Overthepastdecade,theenvironmentalmovementhasexplodedont
[originaltext]Overthepastdecade,theenvironmentalmovementhasexplodedont
[originaltext]Hello,I’mCallumRobertsonandyou’relisteningtothemusicsho
随机试题
[originaltext]W:We’rehavingameetingtomorrow.Canyoumakeit?M:Whattime
ZEAL:FANATIC::A、concentration:chemistB、eloquence:politicianC、prodigalit
我国对外政策的基本立足点是()。A.加强同发达国家的团结与合作 B.加强同发
A.+,-,- B.+,+,- C.+,+,+ D.+,-.+
A.甲睾酮 B.米非司酮 C.醋酸地塞米松 D.黄体酮 E.雌二醇用于风
城市建设用地平衡表的主要作用包括( )。A.评价城市各项建设用地配置的合理水平
下列分析方法中,可用来分析项目质量缺陷产生原因的是()。A、控制图法B、直方图
软件公司协助运输企业进行的软件运行维护工作有()。A.检验测试 B.技术支持
如图7-22所示正弦电流电路发生谐振时,电流表A1、A2的读数分别为4A和3A,
女,40岁,右乳外上象限无痛性肿块,直径4cm,与皮肤轻度粘连,右腋下可触及一枚
最新回复
(
0
)