tornadotornadoArotatingcolumnofairfromathunderstormtotheground.龙卷风：一种纵向的气旋，伴随有倒漏斗形的积雨云，涡流直径达几百码，以每小时八百公里）的速度移动，具有极大的毁坏性Arotatingcolumnofairfromathunderstormtotheground.龙卷风：一种纵向的气旋，伴随有倒漏斗形的积雨云，涡流直径达几百码，以每小时八百公里）的速度移动，具有极大的毁坏性Whatisatornado?Whatisatornado?typhoontyphoon台风：AtropicalcycloneoccurringinthewesternPacificorIndianoceans.发生在西太平洋或印度洋的热带暴风台风：AtropicalcycloneoccurringinthewesternPacificorIndianoceans.发生在西太平洋或印度洋的热带暴风Aviolentstormwithextremelystrongwindsandheavyrain.飓风：一种猛烈的热带风暴，形成于大西洋或加勒比海赤道地区，从形成地向北、西北或东北移动，常携有大量雨水Aviolentstormwithextremelystrongwindsandheavyrain.飓风：一种猛烈的热带风暴，形成于大西洋或加勒比海赤道地区，从形成地向北、西北或东北移动，常携有大量雨水hurricanehurricanethedifferenceamongTyphoon,HurricaneandTornadoearthquakeearthquaketidalwave/tsunamiAnearthquakeoriginatingundertheseafloor.海震/海啸：发自海底的地震Anearthquakeoriginatingundertheseafloor.海震/海啸：发自海底的地震lightninglightning闪电：thebrightflashesoflightthatyouseeintheskyduringastorm.天空中云层放电时所产生的闪光。闪电：thebrightflashesoflightthatyouseeintheskyduringastorm.天空中云层放电时所产生的闪光。thunderstormthunderstorm雷暴：aviolentstormofthunderandlightning,oftenaccompaniedbyrainandsometimeshail.短暂且有时很猛烈的雷和闪电的风暴，通常伴有雨且有时下冰雹flood：alargeamountofwaterthatcoversanareawhichwasdrybefore.正常情况下干燥为陆地地区的水泛滥flood：alargeamountofwaterthatcoversanareawhichwasdrybefore.正常情况下干燥为陆地地区的水泛滥VolcaniceruptionVolcaniceruptionfloodhurricanelightningthunderstormsandstormtornadoearthquaketyphoontidalwavevolcaniceruption洪水飓风闪电雷暴沙尘暴龙卷风地震台风海啸火山喷发DisastersofNatureexperiencevt.经历Ourcountryhasexperiencedgreatchangesinthepastthirtyyears.n.(生活、工作)经验、技巧(不可数)经历，经历过的事(可数)PleasetellusofyourexperienceswhileinAfrica.Youdon’tneedanyexperiencetoworkhere.experiencedadj.有经验的Mr.Liisquiteanexperiencedteacher.haveexperiencein/atbeexperiencedin/atMexicoMexicoGulfStreamGulfStreamstream河流,水流current水流，电流，气流longitudelatitude经度：地球表面的成角距离，从英国格林尼治的本初子午线向东或向西至经过某一点的子午线计量，以度（或小时）、分和秒表示纬度：地球赤道北或南的角距离，例如在地图或地球仪上沿着子午线用度数测量Fillintheblankswithproperorphrase.1.Ashandlava___________(倾泻)themountain,____________(放火烧了)hundredsofhouses.2.Hundredsofhoused__________(着火了)whenthelavareachedthem.3.We__________(设法使得)gethalfthepopulationtoanotherisland.4.We_________________.(把火都扑灭了)5.WhenMr.Smithgotthemessagethathishouse__________(正被大火烧着),herushedhomeasquicklyashecould.poureddownsettingfiretocaughtfiremanagedtoputallthefiresoutwasonfireStomboli________inItalyhaserupted.The________occurredonSaturdayandthankfully,noonewaskilled.Theeruptionblewthetopoffthevolcanoandsent_____andsteamintotheair.______androckfromtheeruptioncausedahuge_________whenitreachedthesea.Thisturnedoverboatsintheportandcauseda_____inthevillageofGinostra.asheruptionfloodlavatidalwavevolcanovolcanoeruptionashLavatidalwaveflood1.Whatisavolcano?3.Whatmaycomeoutofavolcanowheniterupts?2.Canyoutellmethethreetypesofvolcanoes?ItisanopeninginthegroundthatreachesintotheEarth.Therearedead,sleepingandactivevolcanoes.Ash,steam,lava.
