首页
登录
职称英语
Every year, earthquakes are responsible for a large number of deaths and vas
Every year, earthquakes are responsible for a large number of deaths and vas
游客
2024-02-05
24
管理
问题
Every year, earthquakes are responsible for a large number of deaths and 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 vibration. Other damage results from landslides, tsunamis(large ocean waves)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 magnitude recorded to date is 9.0. Major damage generally occurs from quake ranging upwards from 6.0. Exceptions to this are those whose epicenters are located far from the inhabited areas.
The actual cause of the quake itself is the breaking apart 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 minimize the damage and lessen some of the suffering results from earthquakes, scientists are working on ways to enable accurate prediction. Two of the instruments presently in use to achieve this goal are seismograghs and tiltmeters. The former records any shaking of the earth: by means of calculations seismologist can accurately indicate the exact time, location and size of an earthquake. The latter, as the name suggests, is used to record any changes in the title of the land. [br] Which of the following is the direct cause of an earthquake?
选项
A、The production of pressure.
B、Continental drift.
C、The breaking apart of rocks.
D、The expansion and contraction of the earth’s crust and continental drift.
答案
C
解析
推理题。总结第三段可知,地壳的拉伸和收缩以及大陆版块漂移是引起压力的两个成因,而压力则导致了地表或地下岩石的破裂,从而引起了地震。由此可知,导致地震的直接原因是地表和地下岩石的破裂,故选项C正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3422814.html
相关试题推荐
Womenareonthevergeofoutnumberingmenintheworkforceforthefirstti
Womenareonthevergeofoutnumberingmenintheworkforceforthefirstti
Womenareonthevergeofoutnumberingmenintheworkforceforthefirstti
Averyimportantworldproblemistheincreasingnumberofpeoplewhoactual
Averyimportantworldproblemistheincreasingnumberofpeoplewhoactual
[originaltext]Americaisacountryonthemove.Inunheardofnumbers,peop
Livinginatimewhenanever-increasingnumberofnewsproviderspushacon
Livinginatimewhenanever-increasingnumberofnewsproviderspushacon
Livinginatimewhenanever-increasingnumberofnewsproviderspushacon
Livinginatimewhenanever-increasingnumberofnewsproviderspushacon
随机试题
WhereLindahasher______charm,andRoberthassenseofverveandsuavity,Polly
Untilthen,hisfamily______fromhimforsixmonths.A、didn’thearB、hasn’tbee
库珀所论述的三个客观责任层次分别是( )。A.岗位责任 B.道德责任 C.
菌痢的病程超过几个月为慢性菌痢A:2个月 B:3个月 C:4个月 D:5个
Wehadalongconversationaboutherpar
××在建工程房地产抵押价值评估报告 封面及目录(略) 致委托方函(略)
小组评估的技巧中,以观察的方式收集资料时,下列选项中()是社会工作者面临的选择
患者头痛、眩晕、昏厥、呕血者,多因A.胆气上逆 B.肺气上逆 C.肝气上逆
甲欠乙1万元到期借款,经乙催讨后一直未还。下列情形中,乙可以向人民法院提出请求行
工程质量事故的实况资料是找出质量事故原因和确定处理对策的基础,它主要来自()。A
最新回复
(
0
)