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 Coining? Everyone who lives in San Francisco knows that earthquakes are common in the bay area and they can be
A Great Quake Coining? Everyone who lives in San Francisco knows that earthquakes are common in the bay area and they can be
admin
2013-11-28
130
问题
A Great Quake Coining?
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 earthquake is that the San Andreas faults 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)travel 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 earthquake 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. Analysts suggest that another massive earthquake would cause extensive damage.
People who live there 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 5 kilometers per second.
选项
A、Right
B、Wrong
C、Not mentioned
答案
A
解析
题干大意:1906年的地震,断层开裂的最高速度超过了每秒3.5公里。本题给出的信息是正确的。文章第三段最后一句提到;During bigger quakes,however,ruptures can happen at rates faster than 3.5 kilometers per second.然而,发生更大地震时,产生的破裂速度比每秒3.5公里还要快。由于1906年旧金山地震属于大地震,因此本句是正确的。故答案选A。
转载请注明原文地址:https://kaotiyun.com/show/v7Ld777K
本试题收录于:
职称英语理工类A级题库职称英语分类
0
职称英语理工类A级
职称英语
相关试题推荐
ThePersiansstartedtobuildroadsabout______.TheRomanroadsweremostlybuiltin______.
GoodMusicMusicwhichisoriginalisindividualandpersonal.Thatistosay,itcanbeidentifiedasbelongingtoaparticular
AKripke’sResearchToo1BDangersofHabitualShortagesofSleepCCriticismonKripke’sReportDAWayofOvercomingInsom
FordAbandonsElectricVehiclesTheFordmotorcompany’sabandonmentofelectriccarseffectivelysignalstheendoftheroadfo
YouNeedCourage!ShortlyafterIbeganacareerinbusiness,IlearnedthatCarlWeatherup,presidentofPepsiCo(百事可乐公司
EarthquakeEveryyearearthquakesareresponsibleforalargenumberofdeathsandavastamountofdestructioninvarious
Whatisthefirstparagraphmainlyabout?Whatwouldtheparagraphfollowingthispassagemostprobablydiscuss?
Reliefworkerswereshockedbywhattheysaw.
Reliefworkerswereshockedbywhattheysaw.
Herculeswasthetallestmanintheworld.HerculesfinallymanagedtogettheapplesbydefeatingAtlas.
随机试题
甲状腺功能亢进散发性甲状腺功能减低
自发性气胸可在剧咳或屏气时出现
A.采用龈上洁治术B.采用开髓治疗C.采用龈下刮治术D.采用活髓切断术E.采用充填法急性牙髓炎的应急处理是
男,56岁,舌缘粘膜红白间杂性病变,边缘不规则,表面有小结节。镜下见上皮全厚的分层结构消失。细胞大小不等,形态不一,核浆比例增加,核分裂较多,上皮-固有层界面尚清楚。病理诊断应为
起病急,症状典型,但1周左右迅速痊愈( )症状轻,部分患者因出现肠穿孔就医而确诊( )
下列哪项有助于气胸和胸腔积液的鉴别
项目投入总资金由()构成。
下列有关城镇土地使用税计税依据的表述中,正确的有()。
A、 B、 C、 D、 D间隔组合数列。
下列属于日期型数据的是()。
最新回复
(
0
)