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1、2011职称英语理工类（A、B）阅读理解和完型填空新增文章（原文、练习、译文及答案） 阅读第三十四篇：病毒电池 BatteriesBuiltbyViruses Whatdochickenpox,thecommoncold,theflu,andAIDShaveincommon?They'realldiseasecausedbyviruses,tinymicroorganismsthatcanpassfrompersontoperson.It'snowonder1thatwhenmostpeoplethinkaboutviruses,findingwaystosteerclearof2vir
2、usesiswhat'sonpeople'sminds。 Noteveryonerunsfromthetinydiseasecarriers,though3.InCambridge,Massachusetts4,scientistshavediscoveredthatsomevirusescanbehelpfulinanunusualway.Theyareputtingvirusestowork,teachingthemtobuildsomeoftheworld'ssmallestrechargeablebatteries。 Virusesandbatteriesmayseemlikea
3、nunusualpair,butthey'renotsostrangeforengineerAngelaBelcher,whofirstcameupwith5theidea.AttheMassachusettsInstituteofTechnology(MIT)inCambridge,sheandhercollaboratorsbringtogetherdifferentareasofscienceinnewways.Inthecaseofthevirus-builtbatteries,thescientistscombinewhattheyknowaboutbiology',technol
4、ogyandproductiontechniques。 Belcher'steamincludesPaulaHammond,whohelpsputtogetherthetinybatteries,andYet-MingChiang,anexpertonhowtostoreenergyintheformofabattery."We'reworkingonthingswetraditionallydon'tassociatewithnature,"saysHammond。 Manybatteriesarealreadyprettysmall.YoucanholdA,CandDbatterie
5、s6inyourhand.Thecoin-likebatteriesthatpowerwatchesareoftensmallerthanapenny.However,everyyear,newelectronicdeviceslikepersonalmusicplayersorcellphonesgetsmallerthantheyearbefore.Asthesedevicesshrink,ordinarybatterieswon'tbesmallenoughtofitinside。 Theidealbatterywillstorealotofenergyinasmallpackage
6、.Rightnow,Belcher'smodelbattery,ametallicdiskcompletelybuiltbyviruses,lookslikearegularwatchbattery.Butinside,itscomponentsareverysmall—sotinyyoucanonlyseethemwithapowerfulmicroscope。 Howsmallarethesebatteryparts?Togetsomeideaofthesize,pluckonehairfromyourhead.Placeyourhaironapieceofwhitepaperandt
7、rytoseehowwideyourhairis—prettythin,right?Althoughthewidthofeachperson'shairisabitdifferent,youcouldprobablyfitabout10ofthesevirus-builtbatteryparts,25sidetoside,acrossonehair.Thesemicrobatteriesmaychangeth
