RevisionofLesson25WhatdidCarlfeelinSanFranciscoatthetimeofthebigearthquakein1989?*

Firstheheardanoise.*Thenhefeltthefloormove.

*Andthenhewatchedalltheglassesfalloffontothefloor.

編輯pptLesson26\27EarthquakesLead-inQuestions:I.Haveyoueverheardaboutanearthquake?Whathappenedinthatearthquake?

編輯pptThemostterribleearthquakehappenedinChinaisTangShan’sEarthquakein1976.Agreatpartofthecitywasdestroyed,alargenumberofbuildingswereburnt.About276,000peoplediedintheearthquake,thefireandtheplague（瘟疫）afterit.編輯pptPre-readingQuestions:I.Howmanypeoplewerekilledduringtheearthquakeof1989inthecityofSanFrancisco?

II.Whenthescientistscalltheearthquake“TheBigOne”,whatdotheymean?編輯pptEarthquakes(1)1.At5:13onthemorningofApril18th,1906,thecityofSanFranciscowasshakenbyaterribleearthquake.Agreatpartofthecitywasdestroyedalargenumberofbuildingswereburnt.Thenumberofpeoplewholosthomesreachedasmanyas250,000.About700peoplediedintheearthquakeandthefire.編輯ppt2.AnotherearthquakeshookSanFranciscoonOctober17th,1989.

ItwasAmerica’ssecondstrongestearthquakeandabout100peoplewerekilled.Ithappenedintheeveningaspeopleweretravelinghome.Awideandbusyroadwhichwasbuiltlikeabridgeoveranotherroadfellontotheonebelow.Manypeoplewerekilledintheircars,butafewluckyoneswerenothurt.編輯ppt3.Luckilythe1989earthquakedidnothappeninthecenteroftownbutabout50kilometersaway.Inonepartofthetownagreatmanybuildingsweredestroyed.Thesebuildingswereover50yearsold,sotheywerenotstrongenough.Therewerealotoffiresalloverthecity.Theelectricitywascutoffforseveraldaystoo.編輯ppt4.Whydoearthquakeshappen?Scientistsexplainthattheoutsideoftheearthismadeofanumberofdifferentplates.AtSanFranciscothePacificplatewhichismovingtowardsthenorthwestmeetstheNorthAmericanplate.ThePacificplateismovingveryslowly—at5.3centimetersayear.Sometimesthesetwoplatesstopanddonotmoveforyears.Thensuddenly,theyjumpandanearthquakeisfelt.Asaresultofthemovementoftheseplates,westAmericaneartheseahasalwaysbeenabadplaceforearthquakes.Whenthe1906earthquakehappened,thePacificplatejumped5-6meterstothenorth.Key:Oneplatemovestowardsanotherplate.Sometimestheymeettogetherandjump.Thenyouwillfeelanearthquake.編輯ppt5.Wecan’tstopearthquakes,butwecandothingstomakesuretheydonotdestroywholecities.First,it’snotagoodideatobuildhousesalongthelineswheretwooftheearth’splatesjointogether.Second,ifyouthinktheremaybeanearthquake,it’sbettertobuildhousesonrocknotonsand.Third,youmustmakethehousesasstrongaspossible.Weakbuildingswillfalldowninanearthquake,butstrongonesmaystayup.Earthquakesoftenhappenintheplaces編輯ppt6.

ScientistsareafraidthatonedayanevenbiggerearthquakewillhittheareaaroundSanFrancisco.Theycallit“TheBigOne”.However,peopletodayarestillbuildingmorehouses.ThepopulationinandaroundSanFranciscoisnowtentimesmorethanitwasin1906.Thismeansthatifthereisanotherearthquake,agreatmanyhousesandbuildingswillbedestroyed.編輯ppt1.InwhatpartoftheUnitedStatesisSanFrancisco?

2.Inthespringof1906,whathappenedtothecityofSanFrancisco?

3.Whathappenedagaininthecityinthefallof1989?4.Inwhatotherplacesoftheworlddoearthquakesoftenhappen?

5.Explainthereasonwhythereareearthquakes.編輯pptKeytoQ1:SanFranciscoisinthenorthernCalifornia,borderingthePacificOceanoffitswestcoast.編輯pptTurntopage11ThesearesomephotosoftheearthquakeinthecityofSanFranciscoin1906.編輯pptKeyofthehand-outs1.Thetextisabout_______.C.thetwostrongestearthquakesintheU.S.Andthecauseoftheearthquake

2.Aftertheearthquakein1906,_____wasdestroyed.C.agreatpartofthecity

3.Theearthquakein1989happened__.D.intheevening

4.Fewpeoplediedin1989earthquake,because_____.A.Itdidn’thappeninthecenterofthetown.編輯ppt5.Earthquakearecausedby____.D.themovementofdifferentplates6.Ifyoudonotwanttobeinanearthquake,whichofthefollowingcitieswouldyouchoosetolivein?A.Jining7.Theplatesaremoving____.B.sometimes8.Whatkindofthemovementoftheplatescausestheearthquake?B.Thesuddenjumpmovement.編輯ppt9.Ifearthquakeoftenhappensinacertainplace,wheremayitbe?

C.Attheedgeofalandplatewhichisnexttoanoceanplate.10.Whichisnottalkedaboutastheresultofearthquakesinthetext?D.Trainaccident.Lesson271.Whatcouldwedowiththeearthquake?Wecould____.D.tryourbesttomakeitlessdestructive.編輯ppt2.Whatshouldwetrytodoaboutthe

earthquake?C.trytomakethebuildingstronger.3.Whatkindofplacemayhavelessdestructionafteranearthquake?C.Citieswithstrongbuildingsandasmallpopulation.4.Whichcitydoyouthinkmightgetthemostseriousdamageafteranearthquake?C.Shanghai編輯pptSaySomethingAbouttheTwoEarthquakesintheCityofSanFranciscoThefirstearthquakeinthespringof1906Atwhattimedidtheearthquakehappen?Howmanypeoplediedintheearthquake?Whathappenedtotheother250000people?At5:13onthemorningofApril18th,1906.About700peoplediedintheearthquakeandthefire.Theylosttheirhomes.編輯ppt

Thesecondearthquakehappenedintheautumnof1989Whendidithappen?Howmanypeoplewerekilled?Whathappenedtoawideandbusyroad?Whatelsehappenedduringtheearthquake?Wheredidtheearthquakehappen?IntheeveningonOctober17th,1989.About100peoplewerekilled.Itfellontotheroadbelow.Therewerealotoffiresalloverthecity.Theelectricitywascutofftoo.Ithappenedintheplaceabout50kilometersawayfromthecenterofthetown.編輯ppt編輯ppt編輯ppt9、靜夜四無鄰，荒居舊業(yè)貧。。2023/1/82023/1/8Sunday,January8,202310、雨中黃葉樹，燈下白頭人。。2023/1/82023/1/82023/1/81/8/20236:17:50PM11、以我獨(dú)沈久，愧君相見頻。。2023/1/82023/1/82023/1/8Jan-2308-Jan-2312、故人江海別，幾度隔山川。。2023/1/82023/1/82023/1/8Sunday,January8,202313、乍見翻疑夢(mèng)，相悲各問年。。2023/1/82023/1/82023/1/82023/1/81/8/202314、他鄉(xiāng)生白發(fā)，舊國(guó)見青山。。08一月20232023/1/82023/1/82023/1/815、比不了得就不比，得不到的就不要。。。一月232023/1/82023/1/82023/1/81/8/202316、行動(dòng)出成果，工作出財(cái)富。。2023/1/82023/1/808January202317、做前，能夠環(huán)視四周；做時(shí)，你只能或者最好沿著以腳為起點(diǎn)的射線向前。。2023/1/82023/1/82023/1/82023/1/89、沒有失敗，只有暫時(shí)停止成功！。2023/1/82023/1/8Sunday,January8,202310、很多事情努力了未必有結(jié)果，但是不努力卻什么改變也沒有。。2023/1/82023/1/82023/1/81/8/20236:17:50PM11、成功就是日復(fù)一日那一點(diǎn)點(diǎn)小小努力的積累。。2023/1/82023/1/82023/1/8Jan-2308-Jan-2312、世間成事，不求其絕對(duì)圓滿，留一份不足，可得無限完美。。2023/1/82023/1/82023/1/8Sunday,January8,202313、不知香積寺，數(shù)里入云峰。。2023/1/82023/1/82023/1/82023/1/81/8/202314、意志堅(jiān)強(qiáng)的人能把世界放在手中像泥塊一樣任意揉捏。08一月20232023/1/82023/1/82023/1/815、楚塞三湘接，荊門九派通。。。一月232023/1/82023/1/82023/1/81/8/202316、少年十五二十時(shí)，步行奪得胡馬騎。。2023/1/82023/1/808January202317、空山新雨后，