首页
登录
职称英语
[originaltext] A tsunami is a series of huge waves that can cause great dev
[originaltext] A tsunami is a series of huge waves that can cause great dev
游客
2024-05-14
67
管理
问题
A tsunami is a series of huge waves that can cause great devastation and loss of life when they strike a coast. The word tsunami comes from the Japanese word meaning "harbor wave". Tsunamis are sometimes incorrectly called "tidal waves". Actually tsunamis are not caused by the tides for the gravitational force of the moon on the sea. Regular waves are caused by the wind.
(30) Tsunamis are caused by an underwater earthquake, a volcanic eruption, a sub-marine rockslide, or, more rarely, by an asteroid or meteoroid crashing into in the water from space. (31) Most tsunamis are caused by underwater earthquakes, but not all underwater earthquakes cause tsunamis. An earthquake has to be over about magnitude 6.75 on the Richter scale for it to cause a tsunami. About 90 percent of all tsunamis occur in the Pacific Ocean.
Many tsunamis could be detected before they hit land, and the loss of life could be minimized, with the use of modern technology. If you see the water recede quickly and unexpectedly from a beach (this is called drawback), run toward higher ground or inland, there may be a tsunami coming. Also, if you are on the coast and there is an earthquake, it may have caused a tsunami, so run toward higher ground or inland. Some beaches have tsunami warning sirens, do not ignore them. The first wave in a tsunami is often not the largest; if you experience one abnormally-huge wave, go inland quickly, even bigger waves could be coming soon.
(32)After the huge volume of water has moved, the resulting wave is very long but not very tall (roughly 3 feet tall). The wave spreads across the sea in all directions; it can travel great distances from the source at tremendous speeds.
选项
A、They are tidal waves.
B、They can be caused by the fall of an asteroid into the water.
C、They can not be detected before they hit land.
D、They are harbor waves.
答案
B
解析
讲话人提到海啸在极少的情况下是由太空中的小行星坠入水中而引起的,故选B项。
转载请注明原文地址:https://tihaiku.com/zcyy/3597543.html
相关试题推荐
[originaltext]Today,airtravelisfarsaferthandrivingacaronabusym
[originaltext]Today,airtravelisfarsaferthandrivingacaronabusym
[originaltext]Atsunamiisaseriesofhugewavesthatcancausegreatdev
[originaltext]M:HowdidyoulikeourAmericanHistoryclassyesterday?W:Well
[originaltext]M:HowdidyoulikeourAmericanHistoryclassyesterday?W:Well
[originaltext]M:HowdidyoulikeourAmericanHistoryclassyesterday?W:Well
[originaltext]M:So,howisyournewroommate,Sarah?W:Shereallyturnsmeof
[originaltext]M:So,howisyournewroommate,Sarah?W:Shereallyturnsmeof
[originaltext]Italy’scapitalRomeisafamoustouristattraction,butther
[originaltext]Therearetwobasicwaystoseegrowth:oneasaproduct,th
随机试题
Theevolutionofsexratioshasproduced,inmostplantsandanimalswithse
Friendly______betweendifferentpeoplesfacilitatetheculturalandeconomici
TheArtofPublicSpeakingIfyouweretotape-recordoneo
小学体育《8字接力跑》
Malthus)的《人口原理》B.1972年联合国在斯德哥尔摩召开的人类环境会议
冲头表面粗糙将造成片剂A.硬度不够B.粘冲C.裂片D.崩解迟缓E.含量不均
既补血,又活血的药物是A.阿胶 B.鸡血藤 C.丹参 D.当归
中枢性或肾性尿崩症可选用A.呋塞米 B.乙酰唑胺 C.氢氯噻嗪 D.螺内酯
在下列各项中,违背卫生部颁布的人类辅助生殖技术伦理原则的是使用A.卵胞浆内单精子
根据《建设工程安全生产管理条例》,不需要按照国家有关规定经过专门的安全作业培训,
最新回复
(
0
)