首页
登录
职称英语
The world’s greatest snow-capped peaks, which ran in a chain from the Himala
The world’s greatest snow-capped peaks, which ran in a chain from the Himala
游客
2024-10-19
22
管理
问题
The world’s greatest snow-capped peaks, which ran in a chain from the Himalayas to Tian Shan on the border of China and Kyrgyzstan, have lost no ice over the last decade, new research shows.
The discovery has stunned scientists, who had believed that around 50bn tonnes of meltwater were being shed each year and not being replaced by new snowfall.
The study is the first to survey all the world’s icecaps and glaciers and was made possible by the use of satellite data. Overall, the contribution of melting ice outside the two largest caps— Greenland and Antarctica—is much less than previously estimated, with the lack of ice loss in the Himalayas and the other high peaks of Asia responsible for most of the discrepancy.
Bristol University glaciologist Prof Jonathan Bamber, who was not part of the research team, said: "The very unexpected result was the negligible mass loss from high mountain Asia, which is not significantly different from zero."
The melting of Himalayan glaciers caused controversy in 2009 when a report from the UN’s Intergovernmental Panel on Climate Change mistakenly stated that they would disappear by 2035, instead of 2350. However, the scientist who led the new work is clear that while greater uncertainty has been discovered in Asia’s highest mountains, the melting of ice caps and glaciers around the world remains a serious concern.
"Our results and those of everyone else show we are losing a huge amount of water into the oceans every year," said Prof John Wahr of the University of Colorado. "People should be just as worried about the melting of the world’s ice as they were before."
His team’s study, published in the journal Nature, concludes that between 443-629bn tonnes of meltwater overall are added to the world’s oceans each year. This is raising sea level by about 1.5mm a year, the team reports, in addition to the 2mm a year caused by expansion of the warming ocean.
The scientists are careful to point out that lower-altitude glaciers in the Asian mountain ranges—sometimes
dubbed
the "third pole"—are definitely melting. Satellite images and reports confirm this. But over the study period from 2003-10 enough ice was added to the peaks to compensate.
The impact on predictions for future sea level rise is yet to be fully studied but Bamber said: "The projections for sea level rise by 2100 will not change by much, say 5cm or so, so we are talking about a very small modification." Existing estimates range from 30cm to lm.
Wahr warned that while crucial to a better understanding of ice melting, the eight years of data is a relatively short time period and that variable monsoons mean year-to-year changes in ice mass of hundreds of billions of tonnes. "It is awfully dangerous to take an eight-year record and predict even the next eight years, let alone the next century," he said.
From The Guardian, February 8, 2012 [br] Which of the following words can best replace the underlined word "dubbed" (Para 8)?
选项
A、replicated
B、named
C、chosen
D、entitled
答案
B
解析
本题为词汇题。根据句子“lower-altitude glaciers in the Asian mountain rangessometimes dubbed the‘third pole’一are definitely melting.”可见句中的“third pole”就是指前面的“lower-altitude glaciers in the Asian mountain ranges”,所以dubbed的意思应为“被称为”,所以选项B正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3808506.html
相关试题推荐
Theworld’sgreatestsnow-cappedpeaks,whichraninachainfromtheHimala
Theworld’sgreatestsnow-cappedpeaks,whichraninachainfromtheHimala
Theworld’sgreatestsnow-cappedpeaks,whichraninachainfromtheHimala
Theworld’sgreatestsnow-cappedpeaks,whichraninachainfromtheHimala
Itwashein______wehadthegreatestfaith.A、whoB、whoseC、whomD、thatC关系代词。用来
Thehumanspeciescameintobeingatthetimeofthegreatestbiologicaldiv
Thehumanspeciescameintobeingatthetimeofthegreatestbiologicaldiv
ThatLouiseJohannesisbelievedbymanycriticstobethegreatesttwentiet
ThatLouiseJohannesisbelievedbymanycriticstobethegreatesttwentiet
ThatLouiseJohannesisbelievedbymanycriticstobethegreatesttwentiet
随机试题
[originaltext]W:DoctorLevy,tellusaboutsomeofthemoreunusualservicesh
[originaltext]InBritain,justafterthemaintelevisionnewsprogrammes,a
王某、于某、李某和赵某共同开办了一家房地产经纪公司B公司,王某和于某是房地产经纪
某车间操作平台梁,铰接于柱顶。梁跨度15m,柱距5m,梁上承受均布恒载标准值3k
内部导向战略范畴的有()。A.Y公司调整了新的广告策略 B.A公司成功地获得
基金管理公司内部控制机构包括如下层次()。A:员工自律B:部门各级主管的检查监
甲公司签发了一张银行承兑汇票交付于乙公司,乙公司向付款行提示承兑,付款行拒绝承兌
用于配制普通药物制剂的溶剂或试验用水为A.纯化水 B.灭菌蒸馏水 C.注射用
下列各项说法,符合上市公司股息、红利差别化个人所得税政策的有()。A.当个人转让
工程设备验收前,()应提交设备验收方案,包括验收方法、质量标准、验收的依据
最新回复
(
0
)