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
30
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.
Earthquakes rarely happened in San Francisco before 1906.
选项
A、Right
B、Wrong
C、Not mentioned
答案
B
解析
在第五段第二句提到:Records show that earthquakes were common before 1906.(记录显示在1906年之前地震是十分常见的。)因此可推知,“极少发生地震”的叙述不正确,故此题为“错误”的。
转载请注明原文地址:https://jikaoti.com/ti/rq6sFFFM
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
KnowingYourRealPersonalityfromSleepingPositionsEveryonehasgottwopersonalities—theonethatisshowntotheworld
Youshouldhaveblendedthebutterwiththesugarthoroughly.
Defectsinasystemofeducationshouldbeimprovedgradually.
Thesepaintingsareconsideredbymanytobe(authentic).
Shewasshockedbythestrangenoises.
Ienjoyedtheplay--ithadacleverplotandveryfunnydialogues.
1Tiredofsocialnetworking?LoggingoffFacebook?You’reprobablynottheonlyone.Fearingfortheirprivacyorperhapsjust
ApproachestoUnderstandingIntelligencesItpaystobesmart,butwearenotallsmartinthesameway.Youmaybeatalent
Thetelephonesystemisnolongeroperative.
随机试题
《隋书.文学传》认为北朝文学的特点是【】
演示文稿中应用幻灯片版式有()
有关家庭评估的理解正确的是
用酚/氯仿法提取染色体DNA,正确的描述是
初产妇,孕40周,产程进展24小时,宫口开大4cm,肌注缩宫素10U,宫缩持续不缓解,胎心100次/分,耻上有压痛,腹部有一环状凹陷,应考虑为( )。
下列选项中,属于转包工程的是()。
简述“美术课程凸显视觉性”的内涵和途径。
舒尔茨提出“有技能的人力资源是一切资源中最重要的资源,人力资本投资大于物力资本投资的收益。”这一观点体现教育的()。
在实现Serializable的类中,静态变量和使用【】关键字可以使某些数据不被串行化。
A、Bysendingfewerdiscstothevoters.B、Byresortingtothelawsandregulations.C、Byusingstrongeranti-piracytechnology.
最新回复
(
0
)