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、By observing the ordinary ones that have already erupted. B、By studying the larger part of a volcano hidden underground. C、By
A、By observing the ordinary ones that have already erupted. B、By studying the larger part of a volcano hidden underground. C、By
admin
2013-06-15
57
问题
M: Good morning, class.
W: Good morning, sir.
M: Today we’ll discuss volcanoes. Can you tell me the most dangerous thing about a volcano?
W: I think the most dangerous hazard of a volcano comes from the lava that flows out of it.
M: Good guess. [19]Although your answer makes sense, the biggest killer from a volcano comes from the ash, not the lava. In fact, ash causes serious problems and can make humans and animals sick; it can even kill them. Ash also reduces sunlight and can start heavy rainfalls that lead to mudslides. Did you know that it only takes 30 centimeters of dry ash to collapse a roof of a building? Ash also contaminates water supplies, and kills crops. As you can see, ash causes the most destruction.
W: Professor, are there different sizes of volcanoes?
M: Absolutely. There are ordinary volcanoes that can kill thousands of people and often destroy whole cities, and there are super volcanoes which are highly explosive and can kill billions of people and even destroy an entire continent.
W: Are there any super volcanoes in the world today?
M: Actually, yes. There are 40 super volcanoes. One is in Yellowstone National Park in the United States and two others in Britain. Super volcanoes are quite rare with the last eruption occurring about 74,000 years ago in Indonesia.
W: How do super volcanoes differ from ordinary volcanoes and are they easy to find?
M: By and large, most people would not be able to recognize a super volcano. Like an iceberg, the larger part of a volcano is hidden.
W: Professor, if the volcano hasn’t erupted then how do scientists know what might happen?
M: Well, [21]the scientists are relying on past information from the volcano that erupted in Indonesia and they also forecast their predictions using computer models.
19. What is the most dangerous thing about a volcano?
20. Where did the last eruption of super volcano occur?
21. How can scientists predict the future of volcanoes?
选项
A、By observing the ordinary ones that have already erupted.
B、By studying the larger part of a volcano hidden underground.
C、By tapping their potential of imagination.
D、By resorting to past information and modern technology.
答案
D
解析
D是男士最后一句话的同义概括。
转载请注明原文地址:https://kaotiyun.com/show/nGn7777K
0
大学英语六级
相关试题推荐
ToallAmericans,anotherbasic【B1】______intheirconstitutionistheBillofrights,adoptedin1971.Thisconsistsof10very
Everyculturehasitsownbodylanguage,andchildrenabsorbitsnuancesalongwiththespokenlanguage.AFrenchmantalksandm
Wemustturntosomerecenthumaninventions__________________(为了完全理解这意味着什么).
Thetraditionalbeliefthatawoman’splaceisinthehomeandthatawomanoughtnottogoouttoworkcanhardlybereasonably
A、Theirbehaviorshouldbeattributedtofactorsbeyondtheircontrol.B、Theirbehaviorshouldbeattributedtointernalfactors
IsStressMakingYouFat?TheTriggerThatCausestheMostTroubleOurancestorsatetosurvive.Theyatebecausetheywere
A、Aliteratureprofessor.B、Anacademicadvisor.C、DeanoftheEnglishDepartment.D、ADoctorofAppliedLinguistics.B对话开头,女士说
NationalGuardtroopsareintendedbythepresidentto______.ThepossibilityfortheHousetopasstheproposalisfurtherre
A、Listeningtoadults’advice.B、Askingadultsmanyquestions.C、Learningfrommistakes.D、Doingwhatadultsdo.DWhatisthebe
A、Humansandchimpanzees.B、Humansandmice.C、Chimpanzeesandmonkeys.D、Fishandwhales.A男士说,那意味着猩猩与人的关系比与其他动物的关系更密切。故选A。
随机试题
A.肾缺如B.重复肾C.肾错构瘤D.马蹄肾E.海绵肾左肾区可见两个肾脏及两个输尿管回声,两者密不可分,见于
国际多式联运经营人必须拥有运输工具,才能从事多式联运业务。()
ISO9000族标准的核心标准是()。
第一本中国人自己编写的心理学著作是《教育心理学教科书》。()
下列选项中,()是做好一切领导工作必备的条件,也是行政领导最基本的素质。
管理信息系统的运行维护是保证管理信息系统正常运行的手段。系统的运行和维护工作会随着系统的使用而持续。对信息系统维护时,系统开发人员的主要工作包括程序的维护和()。
实事求是是马克思主义中国化理论成果的精髓,是因为
对于图书管理数据库,查询读者孙慨然的情况。下面SQL语句正确的是______。SELECT*FROM读者
下面程序运行后的输出结果是PrivateSubCommand1_Click()Forj=1To10IfjMod3<>0Thena=a+j\3NextPrinta
Noneofuswere______whenBillaskedforhelp.
最新回复
(
0
)