高中英语 unit2（homealone）教案 译林牛津版必修2

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1、山东省冠县武训高级中学译林牛津版高中英语必修2unit2教案2（homealone）教师看高考阅读理解、专题训练(**)、时文阅读◆技巧点拨时文阅读是高考阅读理解的考查重点。它所报道的都是国内外最新的事物或趋势，内容新颖，语言地道。阅读时文可拓宽考生视野，使考生了解国内外大事及最新动态，激发考生的阅读兴趣，增加考生的语言积累，进而提高考生的语言运用能力，从而做到从容应考。时文多为记叙文或说明文，或记叙某人某物，或介绍某新生事物、科研进展、生活时尚等。此外，广告也可归为时文范畴。因此，要正确理解阅读材料，考生需灵活运用阅读技巧，从而准确把握文章脉络，抓住文章主旨。◆活学活用阅读下列短文，按要求完

2、成读写任务MoveEarth—it'snosciencefictionLONDON—Scientistshavefoundanunusualwaytopreventourplanetfromoverheating：moveittoacoolerspot.Allyouhavetodoissendafewcomets(彗星)inthedirectionofEarth，anditsorbit(轨道)willbechanged.Ourworldwillthenbesentspinningintoasafer，colderpartofthesolarsystem.Thisideaforimproving

3、ourclimatecomesfromagroupofUSNationalAeronauticsandSpaceAdministration(NASA)engineersandAmericanastronomers.Theysaytheirplancouldaddanothersixbillionyearstotheusefullifetimeofourplanet—effectivelydoublingitsworkinglife.TheplanputforwardbyDrLaughlin，andhiscolleaguesDonKorycanskyandFredAdams，needscare

4、fullydirectingacometorasteroidsothatitpassesclosebyourplanetandsendssomeofitsgravitationalenergytoEarth.“Earth'sorbitalspeedwouldincreaseasaresultandwewouldmovetoahigherorbitawayfromtheSun，”Laughlinsaid.EngineerswouldthendirecttheircometsothatitpassedclosetoJupiterorSaturn.Thecometwouldpickupenergyf

5、romoneofthesegiantplanets.LateritsorbitwouldbringitbacktoEarth，andtheprocesswouldberepeated.Intheshortterm，theplanprovidesanidealwaytoglobalwarming，althoughtheteamwasactuallyconcernedwithamuchgreaterdanger.Thesuniscertaintoheatupinaboutabillionyearsandso“seriouslycompromise”ourbiosphere(生物圈)—bycooki

6、ngus.That'swhythegroupdecidedtotrytosaveEarth.Theplanhasoneortwoworryingaspects，however.Forastart，spaceengineerswouldhavetobeverycarefulabouthowtheydirectedtheirasteroidorcomettowardsEarth.Thesmallestmiscalculation(误算)inorbitcouldfireitstraightatEarth—withdeadlyconsequences.Thereisalsothequestionoft

7、heMoon.AsthecurrentissueofScientificAmerican以约30词概括文章大意_________________________________________________________________________________________________________________________________________________