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
Most earthquakes occur within the upper 15 miles of the earth’s surface. But earthquakes can and do occur at all depths to about
Most earthquakes occur within the upper 15 miles of the earth’s surface. But earthquakes can and do occur at all depths to about
admin
2021-10-20
37
问题
Most earthquakes occur within the upper 15 miles of the earth’s surface. But earthquakes can and do occur at all depths to about 460 miles. Their number decreases as the depth increases. At about 460 miles one earthquake occurs only every few years. Near the surface earthquakes may run as high as 100 in a month, but the yearly average does not vary much. In comparison with the total number of earthquakes each year, the number of disastrous earthquakes is very small.
The extent of the disaster in an earthquake depends on many factors. If you carefully build a toy house with an Erector set, it will still stand no matter how much you shake the table. But if you build a toy house with a pack of cards, a slight shake of the table will make it fall. An earthquake in Agadir, Morocco, was not strong enough to be recorded on distant instruments, but it completely destroyed the city. Many stronger earthquakes have done comparatively little damage. If a building is well constructed and built on solid ground, it will resist an earthquake. Most deaths in earthquakes have been due to faulty building construction or poor building sites. A third and very serious factor is panic. When people rush out into narrow streets, more deaths will result.
The United Nations has played an important part in reducing the damage done by earthquakes. It has sent a team of experts to all countries known to be affected by earthquakes. Working with local geologists and engineers, the experts have studied the nature of the ground and the type of most practical building code for the local area. If followed, these suggestions will make disastrous earthquakes almost a thing of the past.
There is one type of earthquake disaster that little can be done about. This is the disaster caused by seismic sea waves, or tsunamis. (These are often called tidal waves, but the name is incorrect. They have nothing to do with tides.) In certain areas, earthquakes take place beneath the sea. These submarine earthquakes sometimes give rise to seismic sea waves. The waves are not noticeable out at sea because of their long wave length. But when they roll into harbours, they pile up into walls of water 6 to 60 feet high. The Japanese call them "tsunamis", meaning "harbour waves", because they reach a sizable height only in harbours.
Tsunamis travel fairly slowly, at speeds up to 500 miles an hour. An adequate warning system is in use to warn all shores likely to be reached by the waves. But this only enables people to leave the threatened shores for higher ground. There is no way to stop the oncoming wave.
Which of the following Can Not be concluded from the passage?
选项
A、The number of earthquakes is closely related to depth.
B、Roughly the same number of earthquakes occur each year.
C、Earthquakes are impossible at depths over 460 miles.
D、Earthquakes are most likely to occur near the surfaces.
答案
C
解析
根据第1段的第3句可以排除A;根据第1段的第5句可排除B;根据第1段的第1句可排除D。根据第1段的第2句可确定C的内容不符合文章内容,所以本题选C。
转载请注明原文地址:https://kaotiyun.com/show/LjtK777K
0
专业英语四级
相关试题推荐
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.Butearthquakescananddooccuratalldepthstoabout
Itisnotsurprising,【C1】______thelackoffitbetweengiftedstudentsandtheirschools,thatsuchstudentsoftenhavelittleg
Thetableclearlyreflectsthestatisticsofjobsatisfactionofthestaffinacertaincompany.Accordingtothedatagivenin
_______time,they’llprobablyagreewithwhatyouproposenow.
Targetyesterday【C1】______WallStreetexpectationswhenit【C2】______a21.1percentriseinquarterlyearnings.GainsinTarget’s
A.dietB.regularlyC.healthyD.commonlyE.reducedF.samplesG.containsH.participatedI.drinkJ.measuredK.av
Afewyearsago,auniversityprofessortriedalittleexperiment.HesentChristmascardstoasampleofperfectstrangers.Alt
Afewyearsago,auniversityprofessortriedalittleexperiment.HesentChristmascardstoasampleofperfectstrangers.Alt
A.negligibleB.overuseC.proceduresD.abnormalE.patientsF.potentialG.compliedH.collaboratedI.madeJ.involved
A.necessityB.hangingonC.periodD.improvingE.haltedF.botheredG.reasonsH.countingonI.performedJ.enlarged
随机试题
关于恩他卡朋的叙述正确的是
患者男,65岁。诊断为肺炎入院,应用抗生素治疗后未见好转,3天后突然出现呼吸急促,烦躁,出大汗。体检:呼吸42次/分,血压98/70mmHg,脉搏102次/分,口唇发绀,双肺闻及水泡音。呼吸衰竭患者气管插管或气管切开的适应证是
舌尖淋巴管大部分回流至()
对骨髓有抑制作用,可引起血小板计数减少的药品是
下列哪一行为应以玩忽职守罪论处?()(2012/2/21)
阅读《声声慢》教学实录(节选),按照要求答题。(播放安雯演唱的《月满西楼》视频)师:这么美的歌声把我们一起带进了课堂,同学们知道这首歌曲的名字叫什么吗?歌词化用了哪位词人的哪首词?生:李清照的《一剪梅》。师:那咱们来一起背诵一遍这首词。(师生
(2020年广东)2020年6月30日颁布的《中华人民共和国香港特别行政区维护国家安全法》是保持香港特别行政区繁荣和稳定的重要法律。以下属于该法规定处罚的罪行有()。①分裂国家罪②颠覆国家政权罪③恐怖活动罪④勾结外国或者境外
全加器是由两个加数Xi和Yi以及低位来的进位Ci-1作为输入,产生向高位的进位Ci以及本位利Si的逻辑电路。(65)和(66)分别是进位和本位和的正确逻辑表达式。全加器亦可通过半加器来实现,此时Si=(67)。若某计算机采用8位带符号补码表示整数,则可由8
下图中所示的查询返回的记录是()。
AntoinetteRicks,Manager,FiestaCatering78ParkAvenue,Detroit,MI48206DearMs.Ricks,Iamsendingthislettertocontes
最新回复
(
0
)