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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
3、'ssmallestrechargeablebatteries。 Virusesandbatteriesmayseemlikeanunusualpair,butthey'renotsostrangeforengineerAngelaBelcher,whofirstcameupwith5theidea.AttheMassachusettsInstituteofTechnology(MIT)inCambridge,sheandhercollaboratorsbringtogetherdifferentareasofscienc
4、einnewways.Inthecaseofthevirus-builtbatteries,thescientistscombinewhattheyknowaboutbiology',technologyandproductiontechniques。 Belcher'steamincludesPaulaHammond,whohelpsputtogetherthetinybatteries,andYet-MingChiang,anexpertonhowtostoreenergyintheformofabattery."We
5、'reworkingonthingswetraditionallydon'tassociatewithnature,"saysHammond。 Manybatteriesarealreadyprettysmall.YoucanholdA,CandDbatteries6inyourhand.Thecoin-likebatteriesthatpowerwatchesareoftensmallerthanapenny.However,everyyear,newelectronicdeviceslikepersonalmusicp
6、layersorcellphonesgetsmallerthantheyearbefore.Asthesedevicesshrink,ordinarybatterieswon'tbesmallenoughtofitinside。 Theidealbatterywillstorealotofenergyinasmallpackage.Rightnow,Belcher'smodelbattery,ametallicdiskcompletelybuiltbyviruses,lookslikearegularwatchbatter
7、y.Butinside,itscomponentsareverysmall—sotinyyoucanonlyseethemwithapowerfulmicroscope。 Howsmallarethesebatteryparts?Togetsomeideaofthesize,pluckonehairfromyourhead.Placeyourhaironapieceofwhitepaperandtrytoseehowwideyourhairis—prettythin,right?Althoughthewidthofeach
8、person'shairisabitdifferent,youcouldprobablyfitabout10ofthesevirus-builtbatteryparts,20/20sidetoside,acrossonehair.Thesemicrobatteriesmaychangeth