首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、It may be freezing fast beneath the glacier. B、It may have micro-organisms living in it. C、It may have certain rare minerals i
A、It may be freezing fast beneath the glacier. B、It may have micro-organisms living in it. C、It may have certain rare minerals i
admin
2021-01-08
22
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、It may be freezing fast beneath the glacier.
B、It may have micro-organisms living in it.
C、It may have certain rare minerals in it.
D、It may be as deep as four kilometers.
答案
B
解析
细节辨认题。短文中提到,科学家们怀疑在沃斯托克湖中有微生物存活,这些微生物可能与外界隔绝长达两百多万年的时间。
转载请注明原文地址:https://kaotiyun.com/show/kKP7777K
0
大学英语六级
相关试题推荐
Naturally,inagroupofanimalsasdiverseasthesnakes,andwithsomanyvariedenemies,therearenumerousdefensivereactio
Naturally,inagroupofanimalsasdiverseasthesnakes,andwithsomanyvariedenemies,therearenumerousdefensivereactio
Mostgrowingplantscontainmuchmorewaterthanallothermaterialscombined.C.R.Barneshassuggestedthatitisaspropert
BargainbookshoppersmusthavebeenpleasedlookingatAmazon’sbestsellerlistthisweekend:Theonlinebooksellerhaddropped
Electroniccigarettesarehandheldnicotine-deliverydevicesthat,despiteadevotedfollowing,arecurrentlyswirlingincontro
Electroniccigarettesarehandheldnicotine-deliverydevicesthat,despiteadevotedfollowing,arecurrentlyswirlingincontro
四大工程
国家博物馆
Forthispart,youareallowed30minutestowriteashortessayentitledOnLivingtheSOHOLifestyle.Youshouldwriteatleas
随机试题
服务对象说:“我丈夫在家经常对我指手画脚,好像只有他在外面赚钱养家,看不到我的价值,经常指责我。其实我在家带孩子做家务,也是非常辛苦的,他一点不知道体贴!”下列社会工作者对服务对象的回应中,符合“同理心”技巧的有()。
为了减少室外设备的热损失,保温层外包的一层金属皮应采用()。
3个月婴儿,出生体重2.8kg,母乳喂养,未加辅食,食欲好。大便次数每日6~8次。为黄色软便无特殊臭味,经治无好转,现在体重5.5kg,体格检查无异常所见。哪一种情况最可能
患儿,发热2天,体温39℃,鼻塞,稍有咳嗽,微汗,口干而渴,咽部红肿,舌红,苔薄黄,指纹浮紫至风关。治疗选方为
关于香豆素的说法错误的是()。
从事建设工程勘察、设计活动,应当坚持()的原则。
期货公司经理层人员在申请任职资格时,必须提交()名推荐人的书面推荐意见。
注意事项1.本题本由给定资料与作答要求两部分构成。考试时限为150分钟。其中,阅读给定资料参考时限为40分钟,作答参考时限为110分钟。满分为100分。2.监考人员宣布考试开始时,你才可以开始答题。3.请在题本、答题卡指定位置填写自己的姓名,填涂准考
医学的本质是人学,医学传承着“除人类之病痛,助健康之完美”的神圣使命,本应是爱的表达。医学要前行,不能单纯依赖科学技术的进步,还需要人文精神的滋养。患者是在病床上体验疾病,医生则是在病床边观察疾病,而“躺在床上”和“站在床边”的感受是截然不同的。这段文字强
TimeIfyoucan【T1】______,youcanknowthetimeofday.Butnooneknows【T2】______.【T3】______oursuccessinmeasuringthe
最新回复
(
0
)