必修一U4workboo听力

WorkbookP62Part1Whydoearthquakeshappen?Scientistsbelievethatthesurfaceoftheearthiscoveredbyanumberofmovingplates.Sometimestwoplatesmovetowardsandpushagainsteachother.Sometimestheystopforyearsbutatothertimestheyjumpandanearthquakeisfelt.Becauseofthemovementsoftheseplates,California,ChinaandJapanhavealotofearthquake.YoucanseetheresultinSanFranciscowherethePacificplatemeetstheNorthAmericanplate.Whenthe1906earthquakehappened,thePacificplatejumped5to6metrestothenorth.Part2Chinaisacountrywheremanyearthquakehappen.ThePacificplateispushingChinafromtheeastandtheIndianplateispushingChinafromthesouthwest.ThepowerofthismovementcreatedtheHimalayasandMountQomolangma.ItnowcausesearthquakesinChina.Wecannotstopearthquakesbutwecandothingstomakesuretheydonotdestroywholecities.Firstitisnotgoodideatobuildhousesalongthelinewheretwoplatesmeet.Second,ifyouthinktheremaybeanearthquake,makesuretobuildhousesonrockratherthansand.Third,youmustmakethehousesasstrongaspossible.Weakbuildingwillfalldowninanearthquake,butstrongonesmaystayup.ListeningTaskP66EversincetheSanFranciscoearthquake,allchidreninCaliforniahavebeentaughtwhattododuringanearthquake.Part1T:Now,ss,doyourememberwhatweshoulddobeforeanearthquakecomes?S1:Wemustmakealistofthings.Itshouldtelluswhattodo,wheretobesafeandwhotocontact.T:Good.Sofirstwhatshouldwedo?S2:Weshoulddrop,coverandhold.T:Excellent.Nowwhatdoesthatmean?S1:Wemustdroptothefloorandcoverourheadswithourhands.T:Yes.S2:Wemustcoverourselvesbyhidingundersomefurniture.T:Right.S3:Wemustholdontothefurnituresoitdoesn'tmoveawayfromusduringtheearthquake.T:Welldone.Sodon'tforget.It'salwaysdrop,coverandhold.Part2T:Now,supposeyouareoutsidewhenanearthquakecomes.Whatshouldyoudo?S3:Gotoanopenspaceawayfrombuildings,treesorpowerlines.T:Verygood.Whatshouldyoudoifyou'reinthelivingroom?S1:Ishouldtiethetelevisiontoatablesoitwon'tmove.Ishouldmakesurethatthebookcasesarealreadytiedtothewall.T:Fine,butwhatshouldyoudoifyouarealonewhentheearthquakestarts?S2:RingafamilyfriendtotellthemwhereIamandcollectmypersonalearthquakebag.T:Quiteright.You'redoneagreatjob.NowforyourhomeworkIwantyoutothinkaboutwhattoputintoyourearthquakebag.We'lldiscusstomorrow.