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
2024-10-11
43
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 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 m 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. [br] 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
通读全文可以看出,除了C项外,其他各项均符合题意。
转载请注明原文地址:https://tihaiku.com/zcyy/3797278.html
相关试题推荐
Thereshouldberoomforprogramsofworldnewswithinchildren’s______.A、rang
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
Mostearthquakesoccurwithintheupper15milesoftheearth’ssurface.But
随机试题
Water...thisfive-letterwordisonethatCaliforniansseealmostdailyinhe
Teamworkplaysanimportantpartinourdailylifeandwork,butsometimesp
Astheworld’surbanpopulationgetsbigger,citiesarestrugglingtoprovid
Frostoccursonlowground(frequent)______thaninhillsnearby.morefrequently本题
根据我国现行的有关制度规定,下列属于证券公司从事证券投资顾问业务禁止行为的有(
房地产市场细分的原则中,()即细分后的市场在一定时期内保持相对稳定,以使企业长
标准作业卡工艺标准及要求应(____),有数据控制要求的应标明。具体、详细$;
某企业2011年和2012年总资产分别为6568000元和7658000元,税前
下列作品中不是选自《一千零一夜》的是() A.《死神的故事》 B.《阿
某人以8%单利借出15000元,借款期为3年;此后以7%的复利将上述借出资金的本
最新回复
(
0
)