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
A Great Quake Coming? Everyone who lives in San Francisco knows that earthquakes are common in the Bay Area--and they can be
admin
2011-01-10
51
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.
The highest speed of fault ruptures in the 1906 quake was more than 3.5 kilometers per second.
选项
A、Right
B、Wrong
C、Not mentioned
答案
A
解析
关键词3.5 kilometers per second。依据此关键词,可在文中第三段最后一句找到相关叙述:During bigger quakes,however,ruptures can happen at rates faster than 3.5 kilometers per second.(但在更大的地震中,断裂速度可以高于3.5千米每秒。)因此可知,“最高断层断裂速度高于3.5千米每秒”的叙述是正确的,故此题为“正确”的。
转载请注明原文地址:https://kaotiyun.com/show/pcQd777K
本试题收录于:
职称英语理工类B级题库职称英语分类
0
职称英语理工类B级
职称英语
相关试题推荐
NeighborDisputesDisputeswithyourneighborscanbecommon,anditiseasytounderstandwhypeoplecareaboutthemsomuc
Adreamusuallyconsistsofvisualimagesthattellastory.
1.Ahospitalisaninstitutionthatprovidesmedicalservicesforacommunity.Thedoctors,nurses,andotherpersonnelofaho
ABiologicalClockEverylivingthinghaswhatscientistscallabiologicalclockthatcontrolsbehavior.Thebiologicalclo
BreakfastStudiesshowthatchildrenwhoeatbreakfastdobetterinschool.Itdoesn’ttakemuchfurtherthoughttobelieve
Theconferenceexploredthepossibilityofclosertradelinks.
Thepassageconfirmsthatusingtanningequipmentisharmfultoone’shealth.DoctorJamesSpencer’sargumentimpliesthatint
1in3developAIDSwithinayearofHIVdiagnosis.
MediaandCurrentEventsThemediacanimpactcurrentevents.AsagraduatestudentatBerkeleyinthe1960s,Iremembere
Theviewfrommybedroomwindowwasabsolutelyspectacular.
随机试题
卡茨提出了教师专业发展的四个阶段分别是:求生期、________、更新期、________。
电路图描述的连接关系仅仅是功能关系,而不是实际的连接导线,因此电路图不能代替敷线图。()
社会保险中最古老的保险项目为()
属于社会性压力源的是
国内总供给的统计核算指标是以生产法计算的()。
设备采购合同通常采用()
发行人应披露控股股东及实际控制人的名称或姓名,前()名股东的名称或姓名、持股数量及持股比例。
2018年某居民企业主营业务收入6000万元、营业外收入100万元,与收入配比的成本5000万元,全年发生管理费用、销售费用和财务费用共计750万元,营业外支出80万元(其中符合规定的公益性捐赠支出60万元),2017年度经核定结转的亏损额20万元。2
阅读下列说明和图,回答问题1到问题3。[说明]目前大多数操作系统都采用虚拟存储技术,这样可在较小的可用内存中执行较大的用户程序,可在内存中容纳更多程序并发执行。引入虚拟存储技术,其基本思想是利用大容量的外存来扩充内存,产生一个
Humansareuniqueintheextenttowhichtheycanreflectonthemselvesandothers.Humansareableto【C1】______,tothinkin
最新回复
(
0
)