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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'snowonder1thatwhenmostpeopleth
2、inkaboutviruses,findingwaystosteerclearof2virusesiswhat'sonpeople'sminds。 Noteveryonerunsfromthetinydiseasecarriers,though3.InCambridge,Massachusetts4,scientistshavediscoveredthatsomevirusescanbehelpfulinanunusualway.Theyareputtingvirusestowork,teaching
3、themtobuildsomeoftheworld'ssmallestrechargeablebatteries。 Virusesandbatteriesmayseemlikeanunusualpair,butthey'renotsostrangeforengineerAngelaBelcher,whofirstcameupwith5theidea.AttheMassachusettsInstituteofTechnology(MIT)inCambridge,sheandhercollaborator
4、sbringtogetherdifferentareasofscienceinnewways.Inthecaseofthevirus-builtbatteries,thescientistscombinewhattheyknowaboutbiology',technologyandproductiontechniques。 Belcher'steamincludesPaulaHammond,whohelpsputtogetherthetinybatteries,andYet-MingChiang,an
5、expertonhowtostoreenergyintheformofabattery."We'reworkingonthingswetraditionallydon'tassociatewithnature,"saysHammond。 Manybatteriesarealreadyprettysmall.YoucanholdA,CandDbatteries6inyourhand.Thecoin-likebatteriesthatpowerwatchesareoftensmallerthanapenn
6、y.However,everyyear,newelectronicdeviceslikepersonalmusicplayersorcellphonesgetsmallerthantheyearbefore.Asthesedevicesshrink,ordinarybatterieswon'tbesmallenoughtofitinside。 Theidealbatterywillstorealotofenergyinasmallpackage.Rightnow,Belcher'smodelbatte
7、ry,ametallicdiskcompletelybuiltbyviruses,lookslikearegularwatchbattery.Butinside,itscomponentsareverysmall—sotinyyoucanonlyseethemwithapowerfulmicroscope。 Howsmallarethesebatteryparts?Togetsomeideaofthesize,pluckonehairfromyourhead.Placeyourhaironapiece
8、ofwhitepaperandtrytoseehowwideyourhairis—prettythin,right?Althoughthewidthofeachperson'shairisabitdifferent,youcouldprobablyfitabout10ofthesevirus-builtbatteryparts,25sidetoside,acrossonehair.Thesemicrobatteriesmaychangeth
