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
2023-08-08
34
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/2909102.html
相关试题推荐
[originaltext]Objectsthatarevibratingmakesounds.Rhythmicsoundvibrations
[originaltext]Objectsthatarevibratingmakesounds.Rhythmicsoundvibrations
[originaltext]Hi,everybody.AsIsaidinmyStateoftheUnionaddress,weliv
[originaltext]Hi,everybody.AsIsaidinmyStateoftheUnionaddress,weliv
[originaltext]Hi,everybody.AsIsaidinmyStateoftheUnionaddress,weliv
[originaltext]IntheUnitedStates,manypeopleoncelivedinlarge,two-and-th
[originaltext]Easterisamixofthreetraditions:Pagan,HebrewandChristian.
[originaltext]W:2millionhighschoolseniorsaregearingupthisfalltoappl
[originaltext]W:2millionhighschoolseniorsaregearingupthisfalltoappl
[originaltext]W:2millionhighschoolseniorsaregearingupthisfalltoappl
随机试题
[originaltext]ExitpollsinIsraelshowthatPrimeMinisterArielSharon’su
WhatdowemeanbyaperfectEnglishpronunciation?Inone(1)_____thereare
图书必备的结构部件不包括( )。A.篇章页 B.扉页 C.版本记录页 D
绩效管理过程的起点是( )。A.绩效辅导 B.绩效考核 C.绩效反馈 D
施工总承包模式下,投标报价的基础为()。A.投资估算指标 B.概算指
控制哮喘急性发作首选的药物是A.β受体激动剂 B.糖皮质激素 C.抗胆碱能药
A.20U/0.1ml B.250U/0.1ml C.15U/0.1ml
在全面从严治党的实践中,习近平总书记指出,“治其本,朝令而夕从;救其末,百世不改
(2011年真题)根据《民法典》,业主将住宅改为经营性用房的,除遵守法律、法规以
工业厂房工程中的工业管道工程是属于工程项目组成中的哪一类()。A.单项工程
最新回复
(
0
)