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
Earthquake Every year earthquakes are responsible for a large number of deaths and a vast amount of destruction in various
Earthquake Every year earthquakes are responsible for a large number of deaths and a vast amount of destruction in various
admin
2010-01-14
72
问题
Earthquake
Every year earthquakes are responsible for a large number of deaths and a vast amount of destruction in various parts of the world. Most of these damaging earthquakes occur either in a narrow belt which surrounds the Pacific Ocean or in a line which extends from Burma to the Alps in Europe. Some of the destruction is directly caused by the quake itself. An example of this is the collapse of buildings as a result of the quake itself. Other damage results from land-slides or major fires which are initiated by the quake.
There are about a million quakes a year. Fortunately, however, not all of them are destructive. The intensity of an earthquake is measured on the Richter Scale, which goes from 0 upward. The highest scale recorded to date is 8.9. Major damage generally occurs from quakes ranging upwards from 6.0.
The actual cause of the quake itself is the breaking of rocks at or below the earth’s surface. This is produced by pressure which scientists believe may be due to a number of reasons, two of which are the expansion and contraction of the earth’s crust and continental drift.
In order to limit the damage and to prevent some of the suffering resulting from earthquakes, scientists are working an ways to enable accurate prediction. Special instruments are used to help people record, for example, shaking of the earth. Scientists are trying to find methods that will enable them to indicate the exact time, location and size of an earthquake.
Certain phenomena have been observed which are believed to be the signs of imminent earthquakes. These include strange behaviours of some animals, the changes in the content of mineral water, etc. The magnetic properties of rocks may also display special pattern before major earthquakes happen.
*
选项
答案
D
解析
本段简述了地震的起因。
转载请注明原文地址:https://kaotiyun.com/show/Euhd777K
本试题收录于:
职称英语理工类基础题库职称英语分类
0
职称英语理工类基础
职称英语
相关试题推荐
AccordingtoBowlby,childrenundertheageofthree______.TheargumentagainstBowlby’sconclusionshowsthat______.
Moods,saytheexperts,areemotionsthattendtobecomefixed,influencingone’soutlookforhours,daysorevenweeks.That’s
Chinadoesalotoftradewithmanycountries.
CallAmericanTheirnamesAgreatdifferencebetweenAmericansocialcustomsandthoseofothercountriesisthewayinwhic
SurveyFindsManyWomenMisinformedaboutCancerSixty-threepercentofAmericanwomenthinkthatifthere’snofamilyhisto
AInsectsandSurfaceTensionBExpansionandContractionCTemperatureofBoilingPointofLiquidsDPrincipalsinphysics
DriedFoodsCenturiesago,mandiscoveredthatremovingmoisture(51)foodhelpedtopreserveit,andthattheeasiestwaytodot
Twoeventshavehighlightedthetensionsinrecentyears.
Whatisresponsibleforprocessingtheinformationsentbyyoureyes?Theexpression"highlightingtheareasofthebrainatwo
随机试题
酶免疫组织化学技术中最常用的酶是
动物受到应激原刺激后可引起
黄体酮
如果某QDII基金发生了境外托管人变更,则以下说法正确的是()。
企业以地区为主要特征来组织销售物流,整个销售物流的各环节由各个不同的地区部门分别由不同的职能部门来共同完成,这种组织结构属于()。
某护士给外伤患者做头孢菌素皮试,其结果为阳性,但医生仍坚持用药。此时该护士最应该坚持的是()。
根据以下资料,回答下列问题。2012年末,中国大陆总人口135404万人,全年出生人口1635万人,死亡人口966万人。从性别结构看,男性人口69395万人,同比增加327万人,女性人口66009万人,同比增加342万人;从城乡结构看,城镇人口7
Ifourstoredoesnothavethepartsyouneed,youmayorder______throughourWebsite,andtheywillbeshippedtoyouatnoex
OneoftheprincipalofWalzer’scritiqueofliberalcapitalismisthatitisinsufficientlyegalitarian.Walzer’scaseagainst
Themobilephoneissettobecomeoneofthecentraltechnologiesofthe21stcentury.Withinafewyears,themobilephonewill
最新回复
(
0
)