外研社必修三Module3Readingtornadotornadofloodhurricanehurricanelightninglightningthunderstormsandstormlandslidelandslidesnowstormsnowstormvolcanic eruptionvolcanic eruptionEarthquakeNatural Disasters volcanic eruptiontornado lightninghurricane thunderstorm earthquakeflood snowstormtsunami drought landslidetyphoon What is a Tornado?What is a Hurricane?All tornadoes have winds of more than 400 kilometers per hour. There are more tornadoes occurring in the US than in other parts of the world.In the US, t
