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
Most earthquakes occur within the upper 15 miles of the earth’s surface. But earthquakes can and do occur at all depths to about
Most earthquakes occur within the upper 15 miles of the earth’s surface. But earthquakes can and do occur at all depths to about
admin
2016-12-06
27
问题
Most earthquakes occur within the upper 15 miles of the earth’s surface. But earthquakes can and do occur at all depths to about 460 miles. Their number decreases as the depth increases. At about 460 miles one earthquake occurs only every few years. Near the surface earthquakes may run as high as 100 in a month, but the yearly average does not vary much. In comparison with the total number of earthquakes each year, the number of disastrous earthquakes is very small.
The extent of the disaster in an earthquake depends on many factors. If you carefully build a toy house with an Erector set, it will still stand no matter how much you shake the table. But if you build a toy house with a pack of cards, a slight shake of the table will make it fall. An earthquake in Agadir, Morocco, was not strong enough to be recorded on distant instruments, but it completely destroyed the city. Many stronger earthquakes have done comparatively little damage. If a building is well constructed and built on solid ground, it will resist an earthquake. Most deaths in earthquakes have been due to faulty building construction or poor building sites. A third and very serious factor is panic. When people rush out into narrow streets, more deaths will result.
The United Nations has played an important part in reducing the damage done by earthquakes. It has sent a team of experts to all countries known to be affected by earthquakes. Working with local geologists and engineers, the experts have studied the nature of the ground and the type of most practical building code for the local area. If followed, these suggestions will make disastrous earthquakes almost a thing of the past.
There is one type of earthquake disaster that little can be done about. This is the disaster caused by seismic sea waves, or tsunamis.(These are often called tidal waves, but the name is incorrect. They have nothing to do with tides.)In certain areas, earthquakes take place beneath the sea. These submarine earthquakes sometimes give rise to seismic sea waves. The waves are not noticeable out at sea because of their long wave length. But when they roll into harbours, they pile up into walls of water 6 to 60 feet high. The Japanese call them "tsunamis", meaning "harbour waves", because they reach a sizable height only in harbours.
Tsunamis travel fairly slowly, at speeds up to 500 miles an hour. An adequate warning system is in use to warn all shores likely to be reached by the waves. But this only enables people to leave the threatened shores for higher ground. There is no way to stop the oncoming wave.
What is the factor that is related to the extent of the damage of an earthquake, as it is exemplified by the earthquake in Agadir, Morocco?
选项
答案
Whether buildings are well-constructed./The construction of buildings.
解析
文章的第2段讨论了地震危害大小的决定因素,作者一开始以建造玩具房子为例来说明不同结构的房屋在地震中受危害程度的不同。接着作者说Agadir的地震并不强烈,仪器都没有记录下来,但整个城市都被毁了:而一些更强烈的地震造成的危害却很小。所以在这里作者是用Agadir的例子来说明地震造成危害的大小,和房屋是否建造得好有关,故本题可回答whether buildings are well—constructed,或者将其表达为名词形式the construction of buildings。
转载请注明原文地址:https://kaotiyun.com/show/X3JK777K
0
专业英语四级
相关试题推荐
Fiftyyearsago,mostpeople’sdailylevelsofactivitywereequivalenttowalkingthreetofivemilesaday.Today,the【C1】____
Womendriversaremorelikelytobeinvolvedinanaccident,accordingtoscientists.Researchers【C1】______6.5millioncar
Mostpeoplewhogoonlinehavemainlypositiveexperience.But,【C1】______anyendeavor—traveling,cooking,orattendingschool—t
ImmigrantstotheUKarebeingtestedontheirEnglishskillsbeforebeingabletoclaimincome-relatedbenefitsunderanewsch
Formanyyears,wehavebeenledtobelievethataperson’sintellectualintelligenceisthegreatestpredictorofsuccess.Soci
You______Markanything.Itwasnoneofhisbusiness.
Ifyourcar______anyattentionduringthefirst12months,takeittoanauthoriseddealer.
"Everythingisgoingtobefine,"mymothersaid,______meonthehead.
Whatisthepassagemainlyabout?
Accordingtothepassage,somejobapplicantswererejected______.
随机试题
背景某工程项目总承包单位上报了如下施工进度计划网络图(时间单位:月),并经总监理工程师和业主确认。施工过程中发生了如下事件:事件一:施工单位施工至D工作时,由于业主在细部设计上提出了新要求,设计单位重新进行了设计。造成D工作施工时间延长了2个月,施工
建筑施工企业出借资质证书允许他人以本企业的名义承揽工程,情节严重的,其可能受到的最严重的行政处罚是()。
中国开始建立学位制度的标志是__________。
下列与肌酐清除率无关的是
A.短针B.长针C.皮肉浅薄部位D.皮肤松弛部位E.肌肉丰厚部位提捏进针法适宜于
A、乙基化β环糊精衍生物B、羟丙基β环糊精C、γ环糊精D、β环糊精E、α环糊精水溶性环糊精衍生物
账户哪一方记增加,哪一方记减少,取决于()。
国务院期货监督管理机构应当在受理期货公司设立申请之日起3个月内作出批准或不批准的决定。()
WhilewesterngovernmentsworryoverthethreatofEbola,amorepervasivebutfarlessharmful【C1】______isspreadingthroughth
TakingVacationsExperiencesan82PercentIncreaseinJobPerformanceA)Thistimeofyear,manyEuropeansarelookingforwardt
最新回复
(
0
)