首页
登录
职称英语
Most earthquakes occur within the upper 15 miles of the earth’s surface. Bu
Most earthquakes occur within the upper 15 miles of the earth’s surface. Bu
游客
2023-11-18
11
管理
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 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 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. [br] The United Nations’ experts are supposed to
选项
A、construct strong buildings.
B、put forward proposals.
C、detect disastrous earthquakes.
D、monitor earthquakes.
答案
B
解析
细节题。第三段第三句指出“这些专家与当地的地质学家和工程师合作,研究地层性质和最适合当地的建筑类型”。紧接着指出If followed,these suggestions will...,可知专家组会提出一些建议,故选项B 符合原文。
转载请注明原文地址:https://tihaiku.com/zcyy/3197285.html
相关试题推荐
Sucheuphemismsmaybestylistically"permissible"iftheyarekeptwithin______
Itisprudenttokeepyourchildwithin______whenshopping.A、distanceB、reach
TheOrientalArtCenterlieswithin______ofmyhome.A、fifteen-minute-driveB、fif
Somepeoplewantgreaterfreedomwithintheregion______bymanyotherethnicg
Sucheuphemismsmaybestylistically"permissible"iftheyarekeptwithin
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.Bu
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.Bu
Allegoryisaliterarydevice______anotherlevelofmeaningisconcealedwithin
Thereductionof______UNpeace-keepingtroopswithin4monthsfromRwandaisa
Thereductionof______UNpeace-keepingtroopswithin4monthsfromRwandaisa
随机试题
[originaltext]ThefirstmagazinewasalittleperiodicalcalledTheReview,
Writealettertoadministrationofauniversitybecauseyouareinterested
Thebookfromwhich"allmodernAmericanliteraturecomes"referstoA、Moby-Dick.
Beforethe1850’s,theUnitedStateshadanumberofsmallcolleges,mostofthe
以下关于知识产权说法错误的是A专利权、商标权和商业秘密又可称为工业产权。 B知
下列关于磷脂的叙述,错误的是A.包括甘油磷脂和鞘脂 B.鞘脂以鞘氨醇为骨架
你上任后,在布置工作时遇到下级反对,将如何处理?
一个行业的萌芽和形成,最基本和最重要的条件是()。 A.人们的物质文化需求
适宜进行讨论、回答群众质疑的心理咨询为A.门诊 B.电话 C.信函 D.专
下列关于责任成本的说法中,正确的有()。A.责任成本是特定责任中心的全部成本
最新回复
(
0
)