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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,findingwaystosteerc
2、learof2virusesiswhat'sonpeople'sminds。 Noteveryonerunsfromthetinydiseasecarriers,though3.InCambridge,Massachusetts4,scientistshavediscoveredthatsomevirusescanbehelpfulinanunusualway.Theyareputtingvirusestowork,teachingthemtobuildsomeoftheworld'ssmallestrechargeablebatteries。 Virusesa
3、ndbatteriesmayseemlikeanunusualpair,butthey'renotsostrangeforengineerAngelaBelcher,whofirstcameupwith5theidea.AttheMassachusettsInstituteofTechnology(MIT)inCambridge,sheandhercollaboratorsbringtogetherdifferentareasofscienceinnewways.Inthecaseofthevirus-builtbatteries,thescientistscomb
4、inewhattheyknowaboutbiology',technologyandproductiontechniques。 Belcher'steamincludesPaulaHammond,whohelpsputtogetherthetinybatteries,andYet-MingChiang,anexpertonhowtostoreenergyintheformofabattery."We'reworkingonthingswetraditionallydon'tassociatewithnature,"saysHammond。 Manybatteri
5、esarealreadyprettysmall.YoucanholdA,CandDbatteries6inyourhand.Thecoin-likebatteriesthatpowerwatchesareoftensmallerthanapenny.However,everyyear,newelectronicdeviceslikepersonalmusicplayersorcellphonesgetsmallerthantheyearbefore.Asthesedevicesshrink,ordinarybatterieswon'tbesmallenoughtof
6、itinside。 Theidealbatterywillstorealotofenergyinasmallpackage.Rightnow,Belcher'smodelbattery,ametallicdiskcompletelybuiltbyviruses,lookslikearegularwatchbattery.Butinside,itscomponentsareverysmall—sotinyyoucanonlyseethemwithapowerfulmicroscope。 Howsmallarethesebatteryparts?Togetsomei
7、deaofthesize,pluckonehairfromyourhead.Placeyourhaironapieceofwhitepaperandtrytoseehowwideyourhairis—prettythin,right?Althoughthewidthofeachperson'shairisabitdifferent,youcouldprobablyfitabout10ofthesevirus-builtbatteryparts,20/20sidetoside,acrossonehair.Thesemicrobatteriesmaychangeth
