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1,本文(Unit7-Earthquake全国英语教师素养大赛一等奖课件.ppt)为本站会员(三亚风情)主动上传,163文库仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。
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Unit7-Earthquake全国英语教师素养大赛一等奖课件.ppt

1、 Unit 7 EarthquakeLesson 26Welcome to Welcome to MzMz.Hes lesson!.Hes lesson!seen from a ferry boat in the bayearthquake-destroyed water pipethe destroyed churchdamaged warehousepoorly-built sheltersestroyedorningarthquakeumberurntumbereachedied At 5:13 on the m of April 18th,1906,the city of San Fr

2、ancisco was s by a terrible e .A large part of the city was d and and a large n of buildings were b .The n of people who lost homes r as many as 250,000.About 700 people d in the earthquake and the fires.hakenhookctobertrongestilledappenedravellingellilleducky Another earthquake s San Francisco on O

3、 17th,1989.It was the second s earthquake and about one hundred people were k .It h in the evening as people were t home.A wide and busy road f onto the one below.A lot of people were k in their cars,but a few l ones were not hurt.uckilyenterwayuildingstrongireslectricityeveral L the 1989 earthquake

4、 did not happen in the c of town but about 50 kilometers a .In one part of the town many b were destroyed.These buildings were over 50 years old,so they were not s enough.There were a lot of f all over the city.The e was cut off for s days too.cientistsutsidelatesacificeetsuddenlyarthquakeappenedump

5、ed S explain that the o of the earth is made of different p .At San Francisco the P plate m the North American plate.When s these two plates jump,an e is felt.When the 1906 earthquake h ,the Pacific plate j 5-6 meters to the north.topakeureirstlongoinetterockhirdossiblealltrongWe cannot s earthquake

6、,but we can do things to m s they do not destroy whole cities.F ,it is not a good idea to build houses a the lines where two of the earths plates j together.Second,if you think there may be an earthquake,it is b to build houses on r not on sand.T ,you must make the houses as strong as p .Weak buildi

7、ngs will f down in an earthquake,but s ones may stay up.cientistsiggeralluildingopulationimeseansnotherestroyedS are afraid that one day an even b earthquake will hit the area around San Francisco.They c it“The Big One”.However,people today are still b more houses.The p in and around San Francisco is now ten t more than it was in 1906.This m that if there is a big earthquake,a great many houses and building will be d .A destroyed road bridgeA destroyed road bridge

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