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1、Unit20Warm-upTeachingaimsI.wordsandphrases：frontiertelescopeatommicroscopeastronomybacteriaradiumsolarcrewpanelinstitutecomputesenseimpactethicalradioactivepoloniumseminarlife-sizedscreenhandybiochemistrytheoreticallyrobotdatabasemeanwhilesourceexplorationbarbershopartificialintelligenc
2、e,lightyear,searchengine,solarsystem,takeover,carryout,dataprocessing,theInternationalSpaceStation,clickinto,intermsof,II.listeninganddiscussionaboutsomethingofscienceIII.toreadthetextandstudythelanguagepointsTeachingtime：TwoperiodsTeachingprocessStep1RevisionStep2newwordslearning1.asks
3、omestudentstoreadthenewwordsfirstandcorrecttheirpronunciation2.playthetapeandhavethemreadafterthetape3.givethemafewminutestoreadthenewwordsfreely,tellthemiftheycan’treadthewords,encoreagethemtoasktheteacher.Step3Warm-up1.Readunitobjectives,andaskthestudentstotellusthemeanings.2.Exercise
4、1a)letthestudentsreadthewordsandthenmatchthebranchesofsciencewiththepictures.b)todiscussthepictureswiththeclass3.Exercise2a)letthestudentsreadtheKeyWordsandmakesurethattheyreallyunderstandthemeaningsoftheKeyWords.b)studentsdotheexerciseindividually,andthenchecktheiranswers4.Exercise3a)m
5、akesuretheclassknowwhattodo.Thenplaythetapetwice,asksomestudentstosaytheiranswerstotheclass.5.Exercise4a)readthequestionsfirstb)havethestudentsworkinpairsanddiscussthequestionsstep4Reading1.Beforeyoustarta)readtheexercise1andaskthestudentsiftheyknowthephrases’meaning.Andgivethemafewminu
6、testodiscusstheanswersb)checktheiranswersandaskthemtogivereasonsfortheiranswers.2.Readtolearna) askthestudentslookatexercise2,andthenplaythecassettetwice.b) givethemtenminutestoreadthetextandfillthetable.c) checktheirsanswers3.Languagepointsa) lookinto向...的里面看,窥视;浏览;观察,调查e.g
7、.:Themayorpromisedtolookintowhethertheclashwasdesigned,oritjusthappenedbyaccident.市长答应调查这次冲突是预先计划好的,还是偶然发生的。Helookedthroughanumberofjournalsbeforehestartedtheresearchproject.他在进行该项研究课题前查阅了许多期刊。b) hundredsof好几百,许许多多c) communicatewith通话,通信;［英］（房间等）互通tocommunicatewithaperson
