首页
登录
职称英语
[originaltext] While some scientists explore the surface of Antarctica, other
[originaltext] While some scientists explore the surface of Antarctica, other
游客
2024-03-11
54
管理
问题
While some scientists explore the surface of Antarctica, others are learning more about a giant body of water four kilometers beneath the ice pack. Scientists first discovered Lake Vostok in the 1970s by using radio waves that penetrate the ice. Since then they have used sound waves and even satellites to map this massive body of water.
How does the water in Lake Vostok remain liquid beneath an ice sheet? The thick glacier above acts like an insulating blanket and keeps the water from freezing, says Martin Siegert, a glaciologist from the University of Wales. In addition, geothermal heat from deep within the Earth may warm the hidden lake. The scientists suspect that micro-organisms may be living in Lake Vostok, closed off from the outside world for more than two million years. Anything found there will be totally alien to what’s on the surface of the Earth, says Siegert. Scientists are trying to find a way to drill into the ice and draw water samples without causing contamination. Again, robots might be the solution. If all goes as planned, a drill-shaped robot will melt through the surface ice. When it reaches the lake, it will release another robot that can swim in the lake, take pictures and look for signs of life. The scientists hope their discoveries will shed light on life in outer space which might exist in similar dark and airless conditions. Recently, close-up pictures of Jupiter’s moon Europa showed signs of water beneath its icy surface. Once tested in Antarctica, robots could be sent to Europa to search for life there, too.
Questions 9 to 11 are based on the passage you have just heard.
9. What did scientists first use to discover Lake Vostok in the 1970s?
10. What do scientists think about Lake Vostok?
11. What do the scientists hope their discoveries will do?
选项
A、Help understand life in freezing conditions.
B、Help find new sources of fresh water.
C、Provide information about other planets.
D、Shed light on possible life in outer space.
答案
D
解析
细节辨认题。短文最后提到,科学家们希望他们的发现能够为外太空存在生命提供线索,它们可能存在于类似的黑暗和真空环境中。
转载请注明原文地址:https://tihaiku.com/zcyy/3524812.html
相关试题推荐
ScientistsscanningandmappingtheGizapyramidssaythey’vediscoveredtha
ScientistsscanningandmappingtheGizapyramidssaythey’vediscoveredtha
ScientistsscanningandmappingtheGizapyramidssaythey’vediscoveredtha
[originaltext]W:Sohow’sourpresentationabouttherestructuringofthecompa
[originaltext]W:Sohow’sourpresentationabouttherestructuringofthecompa
[originaltext]W:Wow!IwouldgiveanythingtobemorelikeAudreyHepburn!M:
[originaltext]W:Wow!IwouldgiveanythingtobemorelikeAudreyHepburn!M:
[originaltext]W:Wow!IwouldgiveanythingtobemorelikeAudreyHepburn!M:
[originaltext]M:Youareheadingforacompletelydifferentworldnowthatyou
[originaltext]W:Hi,mynameisKathy.Nicetomeetyou!M:Nicetomeetyou,t
随机试题
WhatdoyouthinkRobertis?[br][originaltext]W:Robert,youplaytheguitar,
[originaltext]M:Ireallydon’tknowwhattodothissummer.[5]Ican’tafford
Manychildrenfirstlearnthevalueofmoneybyreceivinganallowance.The
某巴士维修连锁公司欲开发巴士维修系统,以维护与维修相关的信息。该系统的主要功能如
下列行为中,不属于刑事违法行为的是()。A.制作、出售假冒他人署名的美术作品
A.湿邪郁蒸 B.阴虚火旺 C.痰热壅盛 D.寒湿内盛 E.里热炽盛苔灰
无菌检查方法或结果判断错误的是A:若供试品管中任何一管显混浊,判断供试品不符合规
人在每一瞬间,将心理活动选择了某些对象而忽略了另一些对象。这一特点指的是注意的(
以下何种实验室检查可鉴别缺铁性贫血与铁粒幼细胞性贫血A.血清铁饱和度 B.骨髓
丙公司为增值税一般纳税人,2019年度至2021年度发生的与无形资产有关业务如下
最新回复
(
0
)