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
2012-01-21
56
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 erect 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 harbors, they pile up into walls of water 6 to 60 feet high. The Japanese call them "tsunamis", meaning "harbor waves", because they reach a sizable height only in harbors. 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.
Which of the following CAN NOT be concluded from the passage?
选项
A、The number of earthquakes is closely related to depth.
B、Roughly the same number of earthquakes occur each year.
C、Earthquakes are impossible at depths over 460 miles.
D、Earthquakes are most likely to occur near the surfaces.
答案
C
解析
文章第一段说明了地震发生的种种特点。A、B、D几种情况都被涉及在内。 其中“At about 460 miles one earthquake Occurs only every few years.”一句说明在460 miles 左右的深度地震发生的频率比较低,但并非不可能。所以C选项在句义上有些绝对。
转载请注明原文地址:https://kaotiyun.com/show/eFXd777K
本试题收录于:
公共英语五级笔试题库公共英语(PETS)分类
0
公共英语五级笔试
公共英语(PETS)
相关试题推荐
FamilyHistoryInanagewhentechnologyisdevelopingfasterthaneverbefore,manypeoplearebeingattractedtothe【C1】__
OnceDailyPillCouldSimplifyHIVTreatmentBristol-MyersSquibbandGileadScienceshavecombinedmanyHIVdrugsintoasi
EnglishandEnglishCommunity1.ThereisnodoubtthatEnglishisausefullanguage.ThepeoplewhospeakEnglishtodaymak
Obesity(肥胖)CausesGlobalWarmingThelistofillsattributabletoobesitykeepsgrowing:Lastweek,obesepeoplewereaccuse
ManofFewWordsEveryonechasessuccess,butnotallofuswanttobefamous.SouthAfricanwriterJohnMaxwellCoetzee
Examiner:Now,inthispartofthetestI’mgoingtogiveeachofyoualistofthreedifferenttopics.I’dlikeyoutoselectone
Answerquestionsbyreferringtothecommentson3differentcarsinthefollowingmagazinearticles.A=AudiA3B=Ho
Thesecondparagraphseemstosuggestthat______WhichofthefollowingstatementsisNOTtrue?
ProfessorWangwentonalecturetourtoEdinburgh.
随机试题
铸造金合金的铸造温度为
对各类结构进行多遇地震作用下的抗震变形验算时,下列各类结构的最大的弹性层间位移限值中正确的是()。
品质公差一般为国际同行所公认的产品品质误差,即使在合同中不做规定,卖方交货品质在公认的范围内,也可以认为符合合同要求,买方不得再提出任何异议。()
人力资源自然结构是以人的()来进行的人力资源配置,包括人力资源的性别结构和年龄结构。
案例:在歌唱课《洪湖水,浪打浪》上,王老师在课前布置了预习任务,请同学们了解洪湖赤卫队的相关故事,上课伊始,同学们争先恐后地分享自己了解到的革命故事,由此顺利导入本课。王老师紧接着为大家播放了《洪湖赤卫队》的片段,分析了故事中主要人物的性格特征,
如何理解“工欲善其事,必先利其器”这句话?
×市发展和改革委员会为贯彻落实科学发展观,充分调动全社会开展节能降耗、污染减排及空气质量改善工作的积极性,会同市财政局、市环保局制定了《×市节能减排奖励暂行办法(征求意见稿)》,于2015年8月31日发公文(×发改[2015]42号)向×市人力社保局征求意
下列关于我国河流的描述,正确的是:
连续独立地投两次硬币,令A1={第一次出现正面),A2={第二次出现正面),A3={两次中一次正面一次反面),A4={两次都出现正面),则().
NarratorListentopartofatalkinanenvironmentalscienceclass.Nowgetreadytoanswerthequestions.Youmayuse
最新回复
(
0
)