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
Here’s how the Pacific Northwest is preparing for "The Big One". It’s the mother of all disaster drills for what could be the wo
Here’s how the Pacific Northwest is preparing for "The Big One". It’s the mother of all disaster drills for what could be the wo
admin
2021-01-08
106
问题
Here’s how the Pacific Northwest is preparing for "The Big One". It’s the mother of all disaster drills for what could be the worst disaster in American history. California has spent years preparing for "The Big One"—the inevitable earthquake that will undoubtedly unleash all kinds of havoc along the famous San Andreas fault (断层). But what if the fault that runs along the Pacific Northwest delivers a gigantic earthquake of its own? If the people of the Cascadia region have anything to do with it, they won’t be caught unawares.
The region is engaged in a multi-day earthquake-and-tsunami (海啸) drill involving around 20,000 people. The Cascadia Rising drill gives area residents and emergency responders a chance to practice what to do in case of a 9.0-magnitude earthquake and tsunami along one of the nation’s dangerous—and underestimated—faults.
The Cascadia Earthquake Zone is big enough to compete with San Andreas (it’s been called the most dangerous fault in America), but it’s much lesser known than its California cousin. Nearly 700 miles long, the earthquake zone is located by the North American Plate off the coast of Pacific British Columbia, Washington, Oregon and Northern California.
Cascadia is what’s known as a "megathrust" fault. Megathrusts are created in earthquake zones—land plate boundaries where two plates converge. In the areas where one plate is beneath another, stress builds up over time. During a megathrust event, all of that stress releases and some of the world’s most powerful earthquakes occur. Remember the 9.1 earthquake and tsunami in the Indian Ocean off Sumatra in 2004? It was caused by a megathrust event as the India plate moved beneath the Burma micro-plate.
The last time a major earthquake occurred along the Cascadia fault was in 1700, so officials worry that another event could occur any time. To prevent that event from becoming a catastrophe, first responders will join members of the public in rehearsals that involve communication, evacuation, search and rescue, and other scenarios.
Thousands of casualties are expected if a 9.0 earthquake were to occur. First, the earthquake would shake metropolitan areas including Seattle and Portland. This could trigger a tsunami that would create havoc along the coast. Not all casualties can necessarily be prevented—but by coordinating across local, state, and even national borders, officials hope that the worst-case scenario can be averted. On the exercise’s website, officials explain that the report they prepare during this rehearsal will inform disaster management for years to come.
For hundreds of thousands of Cascadia residents, "The Big One" isn’t a question of if, only when. And it’s never too early to get ready for the inevitable.
What happens in case of a megathrust earthquake according to the passage?
选项
A、Two plates merge into one.
B、Boundaries blur between plates.
C、A variety of forces converge.
D、Enormous stress is released.
答案
D
解析
细节辨认题。定位句介绍了大逆冲型地震的概念。首先介绍大逆冲型地震是在地震带发生的,一个板块处于另一个板块下方的区域,压力会随着时间的推移而累积。在一次大逆冲型地震中,所有的压力将会释放,由此发生一些世界上最强烈的地震,换言之,发生大逆冲型地震时会释放巨大的压力,故答案为D)。
转载请注明原文地址:https://kaotiyun.com/show/cdP7777K
0
大学英语六级
相关试题推荐
A、MostadvertisementsonTVarecheatingconsumers.B、WatchingTVcostsusmuchmoney.C、Peoplespendtoomuchtimewatchinguse
GetWhatYouPayFor?NotAlways[A]ThemostexpensiveelectioncampaigninAmericanhistoryisover.ExecutivesacrossAmer
Inthe1920sAmericaenjoyedwhatwastobecomeknownas"anAgeofExcess".From1921-1929manufacturingoutputincreasedwith
AmericansEugeneFama,LarsPeterHansenandRobertShillerwontheNobelPrizeforeconomicsonMondayfordevelopingmethodst
AmericansEugeneFama,LarsPeterHansenandRobertShillerwontheNobelPrizeforeconomicsonMondayfordevelopingmethodst
Officeworkerswhowouldnormallystepintoapuborgymtocopewiththestressofaworkingdayarebeinginvitedinsteadtos
A、Thenewdevicescanreducethecheating.B、Thenewdevicesmakecheatingmucheasier.C、Thenewdeviceshasnothingtodowith
A、DNAcansolveallthemysteriesinbiology.B、TheDNAoftwogroupsofgreenturtlesaretotallydifferent.C、TheuselessofD
A、Becauseitislesslikelytorunaway.B、Becauseitislesslikelytobetooshywithotherdogs.C、Becauseit’seasierforit
随机试题
股票市场投资的特点有()
腹主动脉瘤的常见病因是_______。
患者女,52岁,右侧进行性鼻塞,涕血3个月余,鼻腔检查见右侧鼻腔暗红色新生物,质较硬,触之出血不多,似来自鼻顶部,下部达右下鼻甲上缘。若CT扫描显示,肿瘤主要位于鼻腔内,筛板局部破坏,颅内未见肿瘤,该患者较好的治疗方法应是
下面所列工程建设定额中,属于按定额编制程序和用途分类的是()。
自然人可根据需要申请开立个人银行结算账户,也可以在已开立的储蓄账户中选择并向开户银行申请确认为个人银行结算账户。()
在商业银行贷前调查中,贷款合法合规性调查主要包括()。[2016年6月真题]
下列哪一项不是“字体”对话框中的“字符间距”选项卡中的选项?()
下列各句中,语义明确、没有歧义的一句是:
设A和B都是m×n实矩阵,满足r(A+B)=n,证明ATA+BTB正定.
程序测试分为静态分析和动态测试。其中【】是指不执行程序,而只是对程序文本进行检查,通过阅读和讨论,分析和发现程序中的错误。
最新回复
(
0
)