英语：Unit16《Scientists at work》课件(大纲版高一下).ppt

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1、Unit16ScientistsatworkPeriodOnePeriodTwoPeriodThreePeriodFourWhatarethenamesoftheschoolsubjectsinwhichyoustudyscience?sciencephysicschemistrybiologyInphysicswecanlearnaboutthelawsoftheuniverse,forexampleaboutNewtonandthereasonwhyallthethingsonearthfalldown.Inchemistrywelearnaboutthewaydif

2、ferentliquidsandmaterialsreactwitheachother.Inbiologywelearnaboutlifeonearth,forexamplebylookingatthestructureofcells.Describewhatyouseeineachpicture.Picture1showsstudentsdoingphysicsexperiments.Picture2showsstudentshavingclassinachemistrylab.Picture3showsstudentslookingatsomethingthrough

3、amicroscope.Wheninthelab,weshould……Wheninthelab,weshouldnot……ListeningListening1()safetyinthelab()experiments()caraccidents()gloves()longhair()shoes()gases()liquids()flames√√√√√ListenandtickthethingsthatMrsZhutalksabout1.Safetycomesfirst!2.Followtheteacher’sinstructions.3.Bottlesmaycontai

4、ndangerousgases.4.Immediatelywashyoureyeswithalotofwater.5.Cleareverythingawayandleavetheclassroomneatandclean.Washyourhandswithwaterandsoap.Turnoffthelightsandshutthewindow.Listening2Listencarefullyandanswerthequestionsonpage22.SpeakingInmyopinion,weshould/shouldn’t…High-speedmaglevtrain

5、ListeningListenandfindout:AdvantagesDisadvantagesfastnowheelsorengineclean,harmlessto…nonoisemuchtooexpensiveawasteofmoneyUsefulexpressionsItisgoodfortheeconomy.Itcanhelpmanypeopleinthefuture.Itiscleananddoesnotpollutetheair.Itisimportantforscience.Itbringspeoplemorecomfort.Advantages:Use

6、fulexpressionsItistooexpensive.Itisdangerousorbadforyourhealth.Itisbadfortheenvironment.Itisunnecessary.Somepeoplewilluseitforotherthings.Disadvantages:SpeakingLet’stalkaboutcloning,nuclearenergy,computers,spaceflights----whetherweshoulddeveloporusethemornot!Inmyopinion,weshould/shouldn’t

7、…unsafetoalllifeifnotcontrolledcanbeexpensivetobuild/repairNuclearenergyAdvantagesDisadvantagescanmakealltheelectricityweneed2.isalimitlessresourceComputersSpeakingAdvantagesDisadvantagesmakescommunicationfaster2.cankeepinformationbetterunsafebecauseofviruses2.makes