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 Great Quake Coming? Everyone who lives in San Francisco knows that earthquakes are common in the Bay Area-and they can be d
A Great Quake Coming? Everyone who lives in San Francisco knows that earthquakes are common in the Bay Area-and they can be d
admin
2011-01-10
70
问题
A Great Quake Coming?
Everyone who lives in San Francisco knows that earthquakes are common in the Bay Area-and they can be devastating.In 1906,for example,a major quake destroyed about 28,000 buildings and killed hundreds,perhaps thousands of people.Residents now wonder when the next“Big One”will strike.It’s bound to happen someday.At least seven active fault(断层)lines run through the San Francisco area. Faults are places where pieces of Earth’s crust(地壳)slide past each other.When these pieces slip,the ground shakes.
To prepare for that day,scientists are using new techniques to reanalyze the 1906 earthquake and predict how bad the damage might be when the next one happens.
One new finding about the 1906 quake is that the San Andreas Fault split apart faster than scientists had assumed at the time.During small earthquakes,faults rupture(断裂)at about 2.7 kilometers per second.During bigger quakes,however,ruptures can happen at rates faster than 3.5 kilometers per second.
At such high speeds,massive amounts of pressure build up,generating underground waves that can cause more damage than the quake itself.Lucky for San Francisco,these pressure pulses(脉冲)traveled away from the city during the 1906 event.As bad as the damage was,it could have been far worse.
Looking ahead,scientists are trying to predict when the next major quake will occur.Records show that earthquakes were common before 1906.Since then,the area has been relatively quiet.Patterns in the data,however,suggest that the probability of a major earthquake striking the Bay Area before 2032 is at least 62 percent.
New buildings in San Francisco are quite safe in case of future quakes.Still,more than 84 percent of the city’s buildings are old and weak.Analyses suggest that another massive earthquake would cause extensive damage.
People who live there today tend to feel safe because San Francisco has remained pretty quiet for a while.According to the new research,however,it’s not a matter of“if”the Big One will hit.It’s just a matter of when.
A major earthquake striking San Francisco someday is inevitable.
选项
A、Right
B、Wrong
C、Not mentioned
答案
A
解析
第五段最后一句提到:…,the probability of a major earthquake striking the Bay Area before 2032 is at least 62 percent.(在2032年之前大地震袭击海湾地区的可能性至少是62%。)由此可知,“遭受大地震是不可避免的”,故此题为“正确”的。
转载请注明原文地址:https://kaotiyun.com/show/s1Qd777K
本试题收录于:
职称英语理工类C级题库职称英语分类
0
职称英语理工类C级
职称英语
相关试题推荐
Common-coldSenseYoucan’tbeatit,butyoudon’thavetojoinit.Maybeitgotthename"commoncold"becauseit’smorec
KnowingYourRealPersonalityfromSleepingPositionsEveryonehasgottwopersonalities—theonethatisshowntotheworld
Almosteveryoneatthemeetinghasdifferentviews.
Thechairmanproposedthatweshouldstopthemeeting.
Shewasshockedbythestrangenoises.
A.alonglifeexpectancyformostpeopleB.artistsareadroitindealingwiththeirpaintingsubjectC.engageinthemedica
Solvingaproblemcanbebrokendownintoseveralsteps.First,theproblemmustbeidentifiedcorrectly.Psychologistsreferto
ApproachestoUnderstandingIntelligencesItpaystobesmart,butwearenotallsmartinthesameway.Youmaybeatalent
ComputerMouseThebasiccomputermouseisanamazinglycleverinventionwitharelativelysimpledesignthatallowsustop
随机试题
DNA复制的特点是
A.含水硫酸钙B.硫C.水合硅酸镁D.硫化汞E.二硫化二砷石膏的主要成分是()
图5—51所示单元体,法线与x轴夹角α=45°斜截面上切应力τα是()。
绳子的一端绕在内滑轮上,另一端与置于水平面上的物块B相连,如图所示。若物块B的运动方程为x=kt2,其中k为常数,外轮子半径为R。则轮缘上A点的加速度的大小为()。
计划性风险自留应预先制定损失支付计划,下列损失支付方式中,()不能体现计划性风险自留的“计划性”。
下列行为不属于法律上的处分的是()。
我们知道,苹果树产生苹果,物质产生意识。但是苹果可以离开苹果树独立存在,意识却不能离开物质独立存在。列宁认为,在认识论研究的范围之内,看到意识和物质的这种对立是必要的,如果超出这一范围,“把物质和精神即物理的东西和心理的东西当作绝对的对立,那就是极大的错误
水:水杯
元代在国际贸易上实行_______的办法,政府设立______管理经营对外贸易,1285年(至元二十二年)又实行“________”的办法。
已知某企业目标资金结构中长期债务的比重为20%,债务资金的增加额在0~10000元范围内,其利率维持5%不变。该企业与此相关的筹资总额分界点为()元。
最新回复
(
0
)