高中外研必修三316module3教案

，：Module Theof，：Nature，们的是宽恕，但她也严格地惩罚过我们。1998年的洪灾、的沙尘暴、2003年的“”等，恐怕是她给我们的警钟。大自然是无Period1INTRODUCTIONVocabularyandspeaking和READINGANDPeriod2Gr24和26页合并为第二“语法课，学习ThepastperfectpassiveandIndirectspeechPeriod327Givingadefinition。Period4Period528页EVERYDAYENGLISH扩展为“口语课，引导学生进行剧puttingthetextintoadialoguePeriod629CULTURECORNEREATHQUAKEAROUNDTHEPACIFIC介绍环太平洋地区暨中国地区的Period730页的TASK是“任务课，学习用英文编撰或谈论自然。Part Period Reading—WhatIsaTolearntoreadpassageswiththepastperfectpassiveandindirectspeechaboutTolearntoreadwithStep1:Warmingupbyreviewing21stcenturyHi,class.NicetoseeyousafeandTodaywetakeupModule3 ofThroughouthistorytherehavebeensudden,terribleeventsthathaveshakentheworld.Sometimestheyareman-made,rangingfromtheinfamoussinkingoftheTitanictothedeadlyChernobylmeownof1986,whileothersarenaturaldisasters,suchasthecatastrophiceruptionoftheislandofKrakatauorthedevastatingTokyoearthquakeof1923.2001GujaratEarthquake,Bhuj, (January26,2001)EuropeanHeatWaveof2003,EuropeBamEarthquake,Iran(December26,HurricaneIvan,CaribbeanSeaSoutheasternUnitedStatesSeptember2004)2001GujaratEarthquake,Bhuj, (January26,2001)EuropeanHeatWaveof2003,EuropeBamEarthquake,Iran(December26,HurricaneIvan,CaribbeanSeaSoutheasternUnitedStatesSeptember2004) nOceanearthquakeandtsunami（海啸）,Indonesia,Sri,andelsewhere(December26,2004)186,983killed,42,8832005Sumatranearthquake,Indonesia(March28,2005),atleast1,000killed2005Maharashtrafloods,Mumbai,Maharashtra,Western (July2005)HurricaneKatrina,UnitedStates(August2005),tollvaries,2,000killed2005Kashmirearthquake,Kashmir,Pakistan,(October8,2005),deathtolliscurrently87,350butsomeestimateittoriseover100,0002006SouthernLeytemudslide（泥流）Philippines17February2006)950May2006Javaearthquake,Yogyakarta,Java,Indonesia(May27,2006),6,200July2006Javaearthquake,Java,Indonesia(July17,2006),550TyphoonSaomai(2006), ,(August,2006),250WarmingupbydefiningAviolentweatherphenomenoninwhicharotatingcolumnofairformsintoafunnelcloud,oftenreachingtheground,causingseveredamage.ThefollowingarefactsaboutTheymaystrikequickly,withlittleornoTheymayappearnearlytransparentuntildustanddebrisarepickeduporacloudformsintheTheaveragetornadomovesSouthwesttoNortheast,buttornadoeshavebeenknowntomoveinanydirection.Theaverageforwardspeedofatornadois30MPH,butmayvaryfromstationaryto70Tornadoes panytropicalstormsandhurricanesastheymoveontoWaterspoutsaretornadoesthatformoverTornadoesaremostfrequentlyreportedeastoftheRockyMountainsduringspringandsummerPeaktornadoseasoninthesouthernstatesisMarchthroughMay;inthenorthernstates,itislatespringthroughearlysummer.Tornadoesaremostlikelytooccurbetween3p.m.and9p.m.,butcanoccuratanyStep2:BeforeyouPleasegooverthewordlistforthismodule,payingattentiontothepronunciationoftheword,therelationshipbetweenitspronunciationanditsspelling.Step3:WhileyouTypeofwritingandsummariesofWhatIsaTypeofPart1and2:Anexposition;Part3:AnSummariesof1stAtornadoisarotatingcolumnofair/fromathunderstorm/toSummariesof2ndHurricanesarestrongtropicalstorms,andtheyusuallyoccur/insouthernAtlanticOcean,theCaribbeanSea/andtheGulfofSummariesof3rdThisisastory/aboutthe1900GalvestonAtornado:arotatingcolumnofairfromathunderstormtothegroundPart1AdiagramofWhatIsAtornado:arotatingcolumnofairfromathunderstormtothegroundPart1Hurricanes:strongtropicalstorms,usuallyoccurringinthesouthernAtlanticOcean,theCaribbeanSeaandtheGulfofMexicoHurricanes:strongtropicalstorms,usuallyoccurringinthesouthernAtlanticOcean,theCaribbeanSeaandtheGulfofMexicoPartWhatIsaaastoryaboutthe1900GalvestonPartCompletethearticlewithonewordineachWhatIsaTornado?Beingarotating_1_ofairfromathunderstormtothegroundtornadosalmostoccurintheUS,inthe_2_fromTexasinthesoutheasttoSouthDakotainthenorth.WhatIsaHurricane?Beingstrong_3_storms,hurricanesusuallyoccurinthesouthernAtlanticOcean,theCaribbeanSeaandtheGulfofMexico.Thereare_4_windsof120kilometersperhourormore,which_5_hugewaves,heavyrainandfloods.HereisanExtraordinaryEvent.Thisisastory_6_the1900Galvestonhurricane.CharlesCoghlan,anineteenth-centuryIrishactor.Hediedin1899._7_yearslater,hiscoffinwasfoundbyfishermenintheseanearhishome.TheGulfStreamhad_8_it3,000kilometersuptheeasternUScoasttoPrinceEdwardIsland.KeysKeys:12345678AnswerthereadingcomprehensionquestionsaccordingtotheOnaverage,thereare tornadoesintheUSeachyear,causingabout deathsand A.700,70, B.800,80, C.600,60, D.800,85,Themostviolenttornadoshavewindsofmorethan kilometersperA. B. C. D.Thereareonaverage Atlantichurricaneseachyearandtheyusuallyaffecttheeastcoastofthe fromTexastoMaine.A.five, B.six, C.seven,D.eight,Thecemetery CoghlanwasburiedwasdestroyedbythehurricaneandCoghlan’s upintheKeys:1-4A.which, B.when, C.where, D.Keys:1-4Step4:AfteryouUsefulexpressionsfromTheofarotatingcolumnofair,pickup,put…downin…,take…UsefulexpressionsfromTheofarotatingcolumnofair,pickup,put…downin…,take…off…,leave…insideexactlywhereitis,onaverage,causedeathsandinjuries,affectthreeUSstates,bythetime…,strongtropicalstorms,violentwindsof120kilometersperhourormore,theworsthurricanedisasterofalltime,five-meterhighwaves,hitthecity,anextraordinaryevent,inapopulationof,anineteenth-centuryIrishactor,bythelate1890s,moveto…,endup,onPrinceEdwardIsland,intheeastof…,carry…3,000kilometersuptheeasternUScoasttoPrinceEdwardIsland,travelbackto…,beburiedinSentencesmadewithusefulexpressionsfromModuleArotatingcolumnofairwasseenrisingfromtheInthesoutheastofthecountryhouseshavebeenpickedupbytheEvenhighbuildingshavebeenputdowninlargeTakeyourclothesoffandputonyourMybooksareleftinsideexactlywheretheyOnaveragefivedeathshavebeenAboutfivedeathsandseveninjurieshavebeenbroughtbytheworsttornadoofalltimewhichoccurredin1925.TheearthquakeaffectedthreeUSBythetimestrongtropicalstormshadalreadydestroyedmostoftheViolentwindsof120kilometersperhourormorecancausehugeTheepidemicisaffectingtheeastcoastoftheUSfromNewYorktomyTheworsthurricanedisasterofalltimeiscertaintooccuronthe8thSeptemberWindsof200kilometersperhourandfive-meterhighwaveshavehitthecity,killing6,000peopleinapopulationof37,000.Thefiredestroyed3,600buildings,anextraordinaryeventintheworldIt'samatterofinculcatingtruevaluesintheyoungestsegmentoftheHewasanineteenth-centuryIrishBythelate1890s,peoplehadmovedtotheAfterworkingherwayaroundtheworld,sheendedupteachingEnglishasaforeignOnPrinceEdwardIsland,intheeastofthesea,windsaretheWindscarrycarsandhouses3,000kilometersuptheeasternUScoasttoPrinceEdwardHetraveledbacktohisbirthceonlytobeburiedintheReadtotransferWhatisa tornadooccur? Whichcoastdoesitusuallyaffect?AtornadoisarotatingcolumnofairfromathunderstormtotheAlmostallofthemoccurintheUS,inthesoutheasttoSouthDakotainthenorth.Hurricanesarestrongtropicalstorms,andtheyusuallyoccurinthesouthernAtlanticOcean,theCaribbeanSeaandtheGulfItusuallyaffectstheeastcoastoftheUSfromTexastoMaine.PeriodPeriod r—Thepastperfectpassive

IndirectTolearnaboutthepastperfectpassiveandindirectStep1:LearningaboutthepastperfectTheyhadgivenusvisasforthreeWehadbeengivenvisasforthreeStep2:MakingsentenceswiththepastperfectArotatingcolumnofairfromathunderstormtothegroundhadbeendiscoveredbeforefiremanThemostviolenttornadohadbeenobservedThewallethadbeenpickedupandhandedinbeforetheownerfounditBythetimethefireenginesarrivedthefirehadbeenputBythetimehereturnedhomethehousehadbeenThemaphadbeenleftinsideexactlywhereitwaswhenwecameintotheTheeastcoastoftheUShadbeenaffectedgreatlybeforetherescueThecityhadbeenhitthreetimesbytheearthquakebeforethepeoplemovedoutofThemanhadbeenburiedforfivedayswhenhewasHehadbeenkilledbeforewefoundhimintheStep3:LearningaboutindirectWhenusingindirectorreportedspeech,theformchanges.Usuallyindirectspeechisintroducedbytheverbsaid,asinIsaid,Billsaid,ortheysaid.DirectIndirectsimpleHesaid,“IgotoschooleverysimpleHesaid(that)hewenttoschooleverysimpleHesaid,“IwenttoschooleverypastHesaid(that)hehadgonetoschooleverypresentHesaid,“IhavegonetoschooleverypastHesaid(that)hehadgonetoschooleverypresentHesaid,“IamgoingtoschooleverypastHesaid(that)hewasgoingtoschooleverypastHesaid,“IwasgoingtoschooleveryperfectHesaid(that)hehadbeengoingtoschooleveryfutureHesaid,“Iwillgotoschooleverywould+verbHesaid(that)hewouldgotoschooleveryfuture(goingHesaid,“IamgoingtoschoolpresentHesaid(that)heisgoingtoschooleverypastHesaid(that)hewasgoingtoschooleveryDirectIndirectauxiliary+verbHesaid,“DoyougotoschooleveryHesaid,“WheredoyougotosimpleHeaskedmeifIwenttoschooleveryday.*HeaskedmewhereIwenttoschool.Hesaid,“GotoschooleveryHesaidtogotoschooleveryDirectIndirectsimplepresent+simpleHesays,“Igotoschooleverysimplepresent+simpleHesays(that)hegoestoschooleverypresentperfect+simpleHehassaid,“Igotoschooleverypresentperfect+simpleHehassaid(that)hegoestoschooleverypastprogressive+simpleHewassaying,“Iwenttoschooleverypastprogressive+simpleHewassaying(that)hewenttoschooleverypastprogressive+pastHewassaying(that)hehadgonetoschooleveryfuture+simpleHewillsay,“Igotoschooleveryfuture+simpleHewillsay(that)hegoestoschooleveryDirectIndirectHesaid,“IcangotoschooleveryHesaid(that)hecouldgotoschooleveryHesaid,“ImaygotoschooleveryHesaid(that)hemightgotoschooleveryhaveHesaid,“IhavetogotoschooleveryhadHesaid(that)hehadtogotoschooleveryHesaid,“IshouldgotoschooleveryHesaid(that)heshouldgotoschooleveryoughtHesaid,“IoughttogotoschooleveryoughtHesaid(that)heoughttogotoschooleveryStep4AbsorbinformationconcerningNationalCollegeEntrance24分。高考时态题常考一般现在时、一般过去一、某些题无明确时间状语考生必须从已知条件中推出其时间状语。这样的考题很多,---You’veleftthelight---Oh,soIhave. andturnitoff.(2000A.I’ll B.I’ve C.I D.I’m事。选项DA。---Wecouldhavewalkedtothestation,itwasso atallnecessary.(1992A. B.hadn’t C.wouldn’t D.won’t从已知条件“Wecouldhavewalkedtothestation,itwassonear.”可知“我们没有走路而是坐A。---Howareyou---Oh,I asillasIdonowforaverylongtime.(2000A.didn’t B.wasn’t C.don’t D.haven’t此题虽然有时间状语now和foraverylongtime都没有现在这样差。答案为D。---CanIhelpyou,---Yes.Iboughtthisradiohereyesterday,butit .(1996A.didn’t B.won’t C.can’t D.doesn’tbutwork应是现在的情况。所以答案应选D。---Hey,lookwhereyouare---Oh,I’mterriblysorry. .(1999A.I’mnot B.Iwasn’t C.Ihaven’t D.Idon’tB。---Yourphonenumberagain? quitecatch--- .(1995 这里“我”没听清，应是没听清刚才对方说的，而不可能是没听清现在对方说的。B虽是过去，但它表示没有这种可能性，不符题意，故选A。---Oh,it’syou!I ---I’vejusthadmyhaircutandI’mwearingnewglasses.(1997A.didn’t B.hadn’t C.haven’t D.don’t（B（C的事（DA。Thehousebelongstomyauntbutshe hereanymore. A.hasn’t B.didn’t C.hadn’t D.doesn’tJohn,afriendofmine,whogotmarriedonlylastweek,spent$3,000morethanhe thewedding.(2006 A.will B.has C.would D.had leaveattheendofthis---Idon’tthinkyoushoulddothatuntil anotherjob. A.I’mgoingto;you’d B.I’mgoingto;you’veC.I’ll;you’ll D.I’ll;you’dWhatweusedtothink impossiblenowdoesseempossible. A. B. C.has D.willLookatthetimetable.Hurryup!Flight4026 offat18:20. A. B. C.willbe D.hasTheyounggirlsittingnexttomeonthe newasverynervous.She before.(2006广A.hasn’t B.didn’t C.hadn’t D.wasn’tSendmyregardstoyourlovelywifewhenyou home. A. B.will C.have D.Althoughmedicalscience controloverseveraldangerousdiseases,whatworriesusisthatsomeofthemarereturning.(2006江苏)A. B.has C.will D.hadI alongthestreetlookingfor cetoparkwhentheaccident . A.went;wasoccurring B.went;occurred C.wasgoing;occurred D.wasgoing;hadLadiesandgentlemen,pleasefastenyourseatbelts ne (2006福建A.takes B.istaking C.hastaken D.tookKeys:1-5DDBBA6-10

Period FUNCTION—GivingaTolearntogiveaStep1:DefiningaAdefinitionmaybeastatementoftheessentialpropertiesofacertainthing,orastatementofequivalencebetweenatermandthatterm'smeaning.Thetwoarenotmutuallyexclusive,noraretheyequivalent.Aconciseexnationofthemeaningofawordorphraseorsymbol.AstatementthatgivesthemeaningofawordorsymbolintermsthathasbeenpreviouslydefinedorareacceptedasundefinedStep2:GivingaAnearthquakeisatremblingorashakingmovementoftheEarth'ssurface.Earthquakestypicallyresultfromthemovementoffaults,quasi-narzonesofdeformationwithinitsuppermostlayers.Thewordearthquakeisalsowidelyusedtoindicatethesourceregionitself.Thesolidearthisinslowbutconstantmotion(seetetectonics)andearthquakesoccurwheretheresultingstressexceedsthecapacityofEarthmaterialstosupportit....Avolcanoisageologicallandform(usuallyamountain)wheremagma(rockoftheearth'sinteriormademoltenorliquidbyhighpressureandtemperature)eruptsthroughthesurfaceofthenet.Althoughtherearenumerousvolcanoes(someveryactive)onthesolarsystem'srockynetsandmoons,onEarthatleast,thisphenomenontendstooccurneartheboundariesofthecontinentaltes.However,importantexceptionsexistinhotspotvolcanoes.Atornadoisaviolentwindstormcharacterizedbyatwisting,funnel-shapedcloud.Theword"tornado"comesfromtheSpanishorPortugueseverbtornar,meaning"toturn."Tornadoesforminstormsallaroundtheworld,mostfamouslyinabroadareaoftheAmericanMidwestandSouthknownasTornadoAlley.Althoughinpurenumberofincidences,theUnitedStatesexperiencesmoretornadoesthananyothercountry,theUnitedKingdomisthemostproportionallytornado-pronecountryforitssize....Ahurricaneisaseveretropicalcycloneusuallywithheavyrainsandwindsmovinga73-136knots(12ontheBeaufortscale)Period WritingaboutaviolentnaturalTolearntowriteaboutnaturalStep1:TalkingabouttheworstnaturaldisasterssinceGujarat,,2001:earthquake(20,000ElSalvador,2001:earthquake(850Afghanistan,2002:earthquake(2,500Algeria,2003:earthquake(2,266Asia,2003:SARS(744dead,mostlyin)AndhraPradesh,,2003:Heatwave(1,300dead)France,SpainandItaly,2003:Heatwave(50,000dead)Bam,Iran,2003:earthquake(26,300dead)Al-Hoceima,Morocco,2004:earthquake(571dead)HaitiandDominicanRepublic,2004:rains(2,400dead)Philippines,2004:typhoon(1,000dead),2004:floods(1,300SoutheastAsia,2004:tsunamiscausedby9.0earthquake(111,000deadinIndonesia,31,000inSriLanka,10,700in,5,400inThailand,68inMalaysia,82intheMaldives,300inMyanmarand150inSomalia,including1,500Scandinaviantourists,anddozensofGermans,Italians,Dutch,etc)Zarand,Iran,2005:earthquake(500dead)Nias,Indonesia,2005:8.7earthquake(1000Mumbai,,2005:monsoon(1,000,2005:floods(567LouisianaandMississippi,USA,2005:hurricane(1,069Niger,2005:famine(10,000?Kashmir,2005:earthquake(80,500dead,ofwhich79,000inPakistanand1,350in CentralAmerica,2005:floods(1,400dead,ofwhich1,200inGuatemala)Step2:WritingaboutviolentnaturaleventsIMet"Mr.Flood"YiXie(Amy)Iusedtothinkpeopleareveryclever,butwecan'tdoanythingwhennaturaldisastershappen.Wecan'tpreventthem,controlthem,orstopthem.Theonlythingwecandoiscleanupafterthedisasters.It'sverysad.WhenIwasinhighschool,ImetMr.Flood.Itstartedrainingandkeptrainingalmostamonth;thewateronthestreetsgothigherandhighereveryday.Weusedboatsinsteadofcars.Welostlotsofthings,includingourbusinesses,ourjobs,andourhomes.Schoolsclosedandfarmsweredestroyed.Weranoutoffoodandelectricity.Insomecesthewaterwashigherthanthebuildings.Ifeltlikewelivedinawaterworld.Becauseoftheflood,lotsofillnessesbrokeout.Becauseofdeadanimals,peopledied.Thesoilandotherthingsmadethewater every,verydirty.Thatwasinsummertime,soeventhoughitwasraining,thetemperaturewasstillhigh.Thehotweatherandreallydirtywatercausedtheairtobeverybad.Hospitalshadnoextraroomsforpatients.Whenthefloodwasover,Ilookedaroundmycity.Onewordcandescribethesituation--sad.Everythingwasdestroyedandlotsofpeopleweresick,butwewereverystrong,Ithink.Werebuiltourcity,tookcareofthesickpeople,andstartedourbusinessesagain.Ijusthopethatonedaypeoplecanstopthenaturaldisasterswhenevertheyhappen.Wereallyneedtotakecareofourlovelyworld.TheHurricanewasaKevinParfaitfromThisstorytookceaboutsevenyearsago.AtthattimeIwasonlyelevenyearsold,butimagesofthatweekarestillasclearasitallhappenedyesterday.Duringthatweek,wehadtofaceuptothemostpowerfulhurricaneMartiniquehasevenseen.ThefactthatIwaslittleincreasedtheeffectsofsuchanexperience.Icanstillhearthenoiseofthewindblowingonthetapedwindowsthatwereshaking.Outside,everythingwasflyingormoving...trees,papers,stics.Butthenightmarewasnotthatphase,whenwewerejustafraidwithoutanyotherpossibilities.Therealonewasafterithit.Infact,thehurricanedidnotcrosstheislandonlyonce,butthreetimes,causingateachcrossingmoreandmoredamage.Duringtheentireweekfollowingthatevent,wewerenotabletogooutofthehouse.Alltheroadswerecutoff,andwedidnothaverunningwaterorphones.Underthoseconditions,thehardestpartwashavingnocontactwiththerestofmyfamilylivingaroundtheisland.Thefeelingofpresumingthedeathofyourclosefriendsandrelativeswashardtoendure.Westayedlikethatforonehorribleweekbeforeeverythingwasfixed.Forme,thosesevendays,almosteight,werearealnightmare.ItReallywasanAnearthquakeinOnedaymyfriendsandIwerecelebratingourlastdayinhighschoolatoneofourhouseswhichhadapool.Wehadabigpartywhichweenjoyedverymuch.Whenwewereallinthepool,Iaskedmybestfriend,“Don'tyouthinkwearehavingtoomuchfuninthisparty?”SheaskedmewhyIsaidthat,andIreallydidn’tknow,butIfeltdizzy.Afewminuteslater,myfriendsaid,“It’sanearthquake.”Itreallywasanearthquake.Itwasstrangebecauseweactuallyenjoyedit.Wehadnoideathatinsomepartsofthecountrymanypeoplewerescaredandmostofthemlosttheirhouses.Forexample,inPuertoLaCruztherearemanyhouseboats.Also,therearetoomanyhousesbuiltonthemountains,andmostofthosehousesweredestroyed,somanypeoplelosttheirhomes.Thatearthquakewasn’tstrong,buttheweatherreporthadn’tsaidanythingaboutitsonooneknewitwascomingorhadtimetopreparefortheconsequences.Aftertheearthquake,peopledidn’thavefoodorbottledwaterandmanyofthemdied.AFloodHitOurAnotaiUdomwittayakrafromWhenIwasabout14yearsold,IlivedinSurathanee,whichisintheSouthofThailand.Afloodhitourdistrictbecauseofarainstorm.Theroadswerefloodedwithalotofwater.MyfamilyandIworkedtofindthings--brick,stone,andsandbags--inordertodamthewaterthatfloodedourhouse.Also,otherpeopledidlikeourfamily.Thepeoplewholivednexttotheriverhadtoclimbuptheroofsoftheirhousesbecausewaterfromtheriverfloodedtheirhousesveryquickly.Theyhadtositontheroofswiththeirfamiliesandsomeoftheirthingsthattheyhadbeenabletobringwiththemuntilarescuepartycametohelpthem.Thereweremanyconsequencesofthisflood.Forexample,myfather'srubberbusinesswasdamagedbecausehisrubbergotwetandhecouldn'tuseitinhisbusinessanymore.Inaddition,peoplewhohadtogoouthadtouseboatsinsteadofcarsorwalking.Manyhousesweredamaged.Peoplehadtostayatthecesthattherescuepartiespreparedforthem.Somemerchantschosethischancetomakemoremoney.Theyhoardedthefoodandproductsinordertoseethemtopeopleexpensively.Period Speaking—PuttingthetextintoaTopracticespeakingStep1:ReadingaloudtotheYouaregoingtoreadaloudthetexttothetape.Whilereadingaloudpayenoughattentiontothepronunciation,stress,pausesandintonationbythenativespeaker.Step2:PuttingthetextintoaA:WhatisaB:Atornadoisarotatingcolumnofairfromathunderstormtotheground.A:Howviolentisit?B:ThemostviolenthaveA:WhatisaB:Atornadoisarotatingcolumnofairfromathunderstormtotheground.A:Howviolentisit?B:Themostviolenthavewindsofmorethan400kilometersperA:WheredotheyB:AlmostallofthemoccurintheUS.A:Whichpartofit?B:TheycomeintheareafromTexasinthesoutheasttoSouthDakotainthenorth.A:Howstrongisatornado?B:Tornadoescanpickupcars,trainsandevenhousesandputthemdowninthenextstreetoreveninthenexttown.A:HowterribletheyB:Theycanbemoreterrible.Theycantakethefuroffthebackofacatandthefeathersoffachicken.Theycandestroyhouses,butleavethefurnitureinsideexactlywhereitwas.A:Thentheyarestrange,too.Bythewayhowmanytornadoesarethereinayear?B:Onaverage,thereare800tornadoesintheUSeachyear.A:Arethereanydeathscausedbythem?B:Yes,thereare.A:Theycauseabout80deathsand1,500injuries.B:Whatistheworsttornado?A:Theworsttornadoofalltimeoccurredin1925.ItaffectedthreeUSstates:Missouri,Illinois B:Howmanydeathsdiditbringto A:Bythetimeitended,morethan700peoplehadbeenkilledand2,700hadbeenA:WhatisaB:Hurricanesarestrongtropicalstorms.A:Wheredotheyoccur?B:TheyusuallyoccurinthesouthernAtlanticOcean,theCaribbeanSeaandtheGulfofMexico.A:Theyarestrongwinds,aren’tthey?B:Yes,theyare.Theyareviolentwindsof120kilometersperhourormore.A:Howharmfularethey?B:Theycausehugewaves,heavyrainandfloods.A:Howoftendotheycome?B:ThereareonaveragesixAtlantichurricaneseachyear.A:What cesareaffected?B:TheeastcoastoftheUSfromTexastoMaineisusuallyaffected.A:Whenwastheworsthurricane?B:Theworsthurricanedisasterofalltimeoccurredonthe8thSeptember1900inGalveston,A:HowstrongwasB:Windsof200kilometersperhourandfive-meterhighwaveshitthecity.A:Itmusthavecausedmanydeaths.B:Thedisasterkilled6,000peopleinapopulationof37,000anddestroyed3,600A:Iamtoldthatabout400earthquakesoccurworldwideeveryday,A:Iamtoldthatabout400earthquakesoccurworldwideeveryday,morethanahundredthousandinayear.B:What A:issituatedinoneofthemostactiveearthquakeregionsintheB:Thatiswhytherehavebeenmanyterribleearthquakesin .Whatisthemostseriousearth