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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'snowonder1thatwhenmostpeoplethinkaboutviruse
2、s,findingwaystosteerclearof2virusesiswhat'sonpeople'sminds。 Noteveryonerunsfromthetinydiseasecarriers,though3.InCambridge,Massachusetts4,scientistshavediscoveredthatsomevirusescanbehelpfulinanunusualway.Theyareputtingvirusestowork,teachingthemtobuildsomeoftheworld'ss
3、mallestrechargeablebatteries。 Virusesandbatteriesmayseemlikeanunusualpair,butthey'renotsostrangeforengineerAngelaBelcher,whofirstcameupwith5theidea.AttheMassachusettsInstituteofTechnology(MIT)inCambridge,sheandhercollaboratorsbringtogetherdifferentareasofscienceinnew
4、ways.Inthecaseofthevirus-builtbatteries,thescientistscombinewhattheyknowaboutbiology',technologyandproductiontechniques。 Belcher'steamincludesPaulaHammond,whohelpsputtogetherthetinybatteries,andYet-MingChiang,anexpertonhowtostoreenergyintheformofabattery."We'reworkin
5、gonthingswetraditionallydon'tassociatewithnature,"saysHammond。 Manybatteriesarealreadyprettysmall.YoucanholdA,CandDbatteries6inyourhand.Thecoin-likebatteriesthatpowerwatchesareoftensmallerthanapenny.However,everyyear,newelectronicdeviceslikepersonalmusicplayersorcell
6、phonesgetsmallerthantheyearbefore.Asthesedevicesshrink,ordinarybatterieswon'tbesmallenoughtofitinside。 Theidealbatterywillstorealotofenergyinasmallpackage.Rightnow,Belcher'smodelbattery,ametallicdiskcompletelybuiltbyviruses,lookslikearegularwatchbattery.Butinside,its
7、componentsareverysmall—sotinyyoucanonlyseethemwithapowerfulmicroscope。 Howsmallarethesebatteryparts?Togetsomeideaofthesize,pluckonehairfromyourhead.Placeyourhaironapieceofwhitepaperandtrytoseehowwideyourhairis—prettythin,right?Althoughthewidthofeachperson'shairisabit
8、different,youcouldprobablyfitabout10ofthesevirus-builtbatteryparts,25sidetoside,acrossonehair.Thesemicrobatteriesmaychangeth
