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
58
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.
San Francisco is fully prepared for another big earthquake.
选项
A、Right
B、Wrong
C、Not mentioned
答案
B
解析
依据第六段第二句的叙述:Still,more than 84percent of the city’s buildings are old and weak.Analyses suggest that another massive earthquake would cause extensive damage.(还有84%以上的建筑物又旧又不结实。分析指出下一次的大规模地震将会造成巨大的破坏。)所以“旧金山并没有做好充分准备。”故此题为“错误”的。
转载请注明原文地址:https://kaotiyun.com/show/4cQd777K
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
Themajorityofpeople,aboutnineoutoften,areright-handed.Notuntilrecently,peoplewhowereleft-handedwereconsidered
SprainedAnkleOneofthemostcommoninjuriesteenagersandadultsexperienceisasprainedankle.Asprainoccurswhenthe
EveryDogHasItsSayKimikoFukuda,aJapanesegirl,alwayswonderedwhatherdogwastryingtosay.Wheneversheputonmake
AKeepingGoodRelationswithLocalBusinessmenBServiceProvidedbyLocalNewspapersCLargeCirculationoftheNationalNe
Heenduredgreatpainbeforehefinallyexpired.
A.ColorfulLifeonCampusB.IntelligentStudentBodyC.ExcellentAdministrationD.DistinguishedFacultyE.SubstantialFinancial
A.ColorfulLifeonCampusB.IntelligentStudentBodyC.ExcellentAdministrationD.DistinguishedFacultyE.SubstantialFinancial
A.suitdifferentpeopleB.befurtherexploredC.helpthedisabledD.beusedexternallyE.havehealingeffectsF.bepromote
Myfatherisaphysician.
Patriciastaredattheothergirlswithresentment.
随机试题
导游员在到机场接待散客前应认真阅读接待计划,记下()等。
对DPB治疗无效的大环内酯类药物为
患者,女性,25岁。平时月经规则,3个月前妇科检查有小肌瘤,现停经2月余,阴道流血10天。妇科检查子宫如妊娠14周大、软,轻压痛,双侧附件区触及5cm,囊性包块,壁薄、活动好,无压痛。血hcG增高明显。该患者术后随访的目的及时间应是
栀子粉末中可见( )。
施工企业施工过程中,若工程进度款是按月结算,则第一步工作应是()。
少女刘某为某初中三年级学生,虽然家境富裕,但家庭教育缺乏,日常行为不端。某日,刘某纠集个别同学,敲诈、抢劫低年级学生。受害人报案后,刘某被警察带到公安局询问室接受询问。由于刘某为未成年人,公安干警询问时应通知其父母或其他监护人到场。请问,下列选项中哪项符合
“煎饼人”是“门门通、门门松”的万金油式的“知道分子”,他们不是将精力专注于某一个感兴趣的领域,而是力求在各个领域都至少获得一些基本知识。他们爱好浅阅读,极度依赖搜索引擎,缺乏思辨力和想象力。他们的涉猎面铺得薄而大,像煎饼一样,但没有厚而重的知识积淀。在信
你和一个同事在一个科室,他比较善于表现自己,而你比较默默无闻,你怎么看?
串词:模范、应届、自律、评选、收入。
OnehundredandthirteenmillionAmericanshaveatleastonebankissuedcreditcard.Theygivetheirownersautomaticcreditin
最新回复
(
0
)