16.Check out our tsunami(海嘯)facts and learn some interesting information related to these great walls of water that can cause so much destruction.Find out what causes tsunamis and read about some notable recent examples of tsunamis that have occurred around the globe.
Tsunamis are huge waves of water that are usually caused by earthquakes or volcanic eruptions.
As a tsunami approaches the shore,water may move back from the coast.If it is shallow enough,the water may be pulled back hundreds of metres.If you are in the area,observing this is a good indication that a tsunami is on the way.
Regions in tsunami danger zones often have warning systems in place to give people as much time to evacuate(撤離)as possible.
When tsunamis hit shallow water(often near the coast),they slow down but increase in height.
An earthquake in the Indian Ocean off Indonesia in December 2004caused a tsunami that killed over 200,000people in 14countries.
In March 2011,the Tohoku earthquake off the eastern coast of Japan caused a tsunami that was a major factor in the death of over 15,000people.
The tsunami waves created by the Tohoku earthquake reached heights of over 40metres(131feet)in mine areas,wiping out coastal towns and causing a number of nuclear accidents.
The Japanese word"tsunami"literally means"harbour wave".
Tsunamis are sometimes referred to as tidal waves but this term has fallen out of favour because tsunamis are not related to tides.
21.Which of the following shows a tsunami is coming soon?B
A.An earthquake takes place.
B.The water near the shore is pulled back.
C.The water marches towards the coast.
D.The water near the shore is very shallow.
22.In the Tohoku earthquake,over 15,000people died mainly because ofA.
A.the tsunami caused by the earthquake
B.the lack of warning systems
C.the earthquake itself
D.the nuclear accidents caused by the tsunami
23.What can we learn from the passage?C
A.The word"tsunami"is from British English.
B.The term"tidal wave"is used more often than"tsunami".
C.More people died in Indonesia tsunami than in Tohoku tsunami.
D.Some nuclear accidents happened after Indonesia tsunami.
24.The passage is developed mainly byD.
A.making some conclusions
B.giving some examples
C.providing some numbers
D.listing some facts.
分析 本文是一篇說明文.文章主要講述了海嘯發(fā)生的原因,并通過舉例的方法來描述海嘯給人類所帶來的危害.
解答 21-24 BACD
21. B 細節(jié)理解題.根據(jù)文章第三段"If it is shallow enough,the water may be pulled back hundreds of metres…"可知"海岸附近的海水退去"這一現(xiàn)象是海嘯即將到來的標志,故B項正確.
22. A 細節(jié)理解題.根據(jù)文章倒數(shù)第三段In March 2011,the Tohoku earthquake off the eastern coast of Japan caused a tsunami that was a major factor in the death of over 15,000people.可知,地震引起的海嘯是人們死亡的主要原因,故A項符合題意.
23. C 細節(jié)理解題.根據(jù)文章倒數(shù)第三段In March 2011,the Tohoku earthquake off the eastern coast of Japan caused a tsunami that was a major factor in the death of over 15,000people.和倒數(shù)第四段An earthquake in the Indian Ocean off Indonesia in December 2004caused a tsunami that killed over 200,000people in 14countries.可知,在印度尼西亞海嘯中死亡的人比在東日本大海嘯中死亡的人多,故C項符合題意.
24. D 推理判斷題.根據(jù)文章的最后幾段Indian Ocean off IndonesiaH和Tohoku earthquake 可知,作者主要是通過列舉事實展開文章,故D項符合題意.
點評 學(xué)生需要認真閱讀原文,把握文章大意,對文章脈絡(luò)有整體的了解,能仔細查找文中細節(jié),并能根據(jù)文章內(nèi)容進行合理的推測判斷.