七选五高考对接Period3ReadingandVocabularyTeachingGoals:1.LetSsmasterhowtoreadapassage;2.LetSsmastersomewordsandphrases;3.GetSstotalksomethingaboutscienceexperimentsTeachingprocedures:Step1Lead-inandVocabulary1.Todaywearegoingtotalkaboutscienceexperiments.Whatdoyouthinkofwhenyouseealab?(Allowthemtosayouttheirthoughtseveniftheydon’tknowhowtosayinEnglish.)balancealcoholburnertesttube(UsethepicturestointroducesomewordstotheSs.)2.(GroupWork)AskSshowtodoanexperiment?Putthefollowingwordsinorder.conclusionaimresultmethodStep2.SkimmingASimpleScientificExperimentBelowisadescriptionofasimplescientificexperiment.Itshowsushowironreactswithairandwithwater.1.:Tofindoutifironrusts(a)indryair;(b)inwaterthathasnoairinit(air-freewater);(c)inordinarywater.2.:3cleanironnails:testtubes;testtubeholder;cottonwool;oil;Bunsenburner.IronindryairMethod(1)Putsomeironnailsatthebottomofatesttube.(2)Pushsomecottonwooldownthetube.(3)Leavethetubeforoneweek.ResultAfteroneweek,themailshavenotrusted.ConclusionIrondoesnotrustindryair.3.Method(1)Half-fillatesttubewithwater.(2)Boilthewaterforthreeminutes.(Thismakessurethereisnoairinthewater.)(3)Puttwoorthreecleannailsinthewater.(4)Addsomeoiltothewater.Thiswillkeepairoutofthewater.(5)Leavethetubeforoneweek.ResultThenailsdonotrustinthetubewithair-freewater.ConclusionIrondoesnotrustinair-freewater.4.Method(1)Half-fillatesttubewithwaterandaddtwoorthreecleannails.(2)Leavethetubeforoneweek.ResultThenailsrustinthetubewithordinarywater.5.高考对接阅读理解Ironrustsinordinarywater.A.Conclusion;B.Ironinair-freewater;C.Method;D.Result;E,Ironinordinarywater;F.Apparatus;G.Aimstep3.Scanning1.1).Whatistheaimoftheexperiment?A.tofindoutifironrustsindryairB.tofindoutifironrustsinwaterthathasnoairC.tofindoutifironrustsinordinarywaterD.alloftheabove.2).Whatdoestheword“half-fill”meaninparagraph5?A.includesomethingB.mixwithaliquidC.cooksomethinginboilingwaterD.makesomethinghalffull3).Whichofthefollowingstatementistrue?A.Ironrustseasilyindryair.B.Tomakesurethere’snoairinthewater,youhavetoboilthewaterforfourminutes.C.Wedon’tknowwhetherironrustsinordinarywater.D.Theoilcankeepairoutofwater.4).whichisthecorrectorderofthestatements?a.preparesomeapparatus,suchasnails,testtubesandsoon.b.pushsomecottonwooldownthetube.c.leavethetubeforoneweek.d.putsomeironnailsatthebottomofatesttube.e.becleartheaimoftheexperiment:tofindoutifironrustsindryair.A.a-b-d-e-cB.b-a-d-e-cC.e-a-d-b-cD.e-a-b-c-d2.Readthepassageandcompletethetable.高考对接语法填空高考对接书面表达step4.SummaryThe____ofthisexperimentistodiscoverifiron_____(rust)indryairandinordinarywater._____(carry)outtheexperiment,youneedthefollowing_____:cleanironnails,twotesttubesandsomecottonwool.Inthefirstpartoftheexperiment,the____isdry.Itshowsthatiron___________(rust)indryair.Inthesecondpart,youmust_____thewaterto_____________thatthereisnoairinit.________(add)someoiltothewatercan______theairoutofit.Itshowsthat_____don’trustin____________water.Inthethirdpart,half-fillthetube______water.The_________(conclude)isthattheyrustin_________water.5.RetellingAsimpleScientificExperimentTheaim/purposeofthisexperimentistofindoutwhether---Toconducttheexperimentproperly,youneedthefollowingthings:---.Thestepsareasfollows.First---.Next,---.Andthen,---.Finallyyoucansee---Therefore,wecandraw/reach/arriveattheconclusionthat---Asamplewriting:AsimpleScientificExperimentTheaim/purposeofthisexperimentistofindoutwhetherironrustsinair-freewater.Tocarryouttheexperimentproperly,youneedthefollowingthings:ironnails,testtubes,oil,tubeholders.Thestepsareasfollows.First,half-fillatesttubewithwaterandboilthewaterforthreeminutes.Next,puttwocleannailsinthewater.Andthen,addsomeoiltothewaterandleavethetubeforoneweek.Finally,youcanseethenailsdonotrustinthetubewithair-freewater.Therefore,wecandraw/reach/arriveattheconclusionthatirondoesnotrustinair-freewater.
