2011理工类职称英语教材新增理工b文章(免币)

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1、2011年理工类职称英语教材新增文章下载阅读理解新增文章（共6篇）目录：第三十四篇(B级)：BatteriesBuiltbyViruses第三十八篇(B级)：LongerLivesforWildElephants第三十四篇BatteriesBuiltbyViruses　　Whatdochickenpox,thecommoncold，theflu，andAIDShaveincommon?They'realldiseasecausedbyviruses，tinymicroorganismsthatcanpassfrompersontoperso

2、n.It’snowonder1thatwhenmostpeoplethinkaboutviruses,findingwaystosteerclearof2virusesiswhat'sonpeople'sminds.　　Noteveryonerunsfromthetinydiseasecarriers,though3.InCambridge，Massachusetts4,scientistshavediscoveredthatsomevirusescanbehelpfulinanunusualway.Theyareputtingviruse

3、stowork，teachingthemtobuildsomeoftheworld’ssmallestrechargeablebatteries.　　Virusesandbatteriesmayseemlikeanunusualpair,butthey'renotsostrangeforengineerAngelaBelcher,whofirstcameupwith5theidea.AttheMassachusettsInstituteofTechnology(MIT)inCambridge，sheandhercollaboratorsbr

4、ingtogetherdifferentareasofscienceinnewways.Inthecaseofthevirus-builtbatteries，thescientistscombinewhattheyknowaboutbiology，technologyandproductiontechniques.　　Belcher’steamincludesPaulaHammond，whohelpsputtogetherthetinybatteries，andYet-MingChiang,anexpertonhowtostoreenerg

5、yintheformofabattery."We'reworkingonthingswetraditionallydon’tassociatewithnature,"saysHammond.　　Manybatteriesarealreadyprettysmall.YoucanholdA，CandDbatteries6inyourhand.Thecoin-likebatteriesthatpowerwatchesareoftensmallerthanapenny.However，everyyear，newelectronicdevicesli

6、kepersonalmusicplayersorcellphonesgetsmallerthantheyearbefore.Asthesedevicesshrink，ordinarybakerieswon’tbesmallenoughtofitinside.　　Theidealbatterywillstorealotofenergyinasmallpackage.Rightnow，Belcher’smodelbattery，ametallicdiskcompletelybuiltbyviruses，lookslikearegularwatc

7、hbattery.Butinside，itscomponentsareverysmall-sotinyyoucanonlyseethemwithapowerfulmicroscope.　　Howsmallarethesebatteryparts?Togetsomeideaofthesize，pluckonehairfromyourhead.Placeyourhaironapieceofwhitepaperandtrytoseehowwideyourhairis-prettythin，right?Althoughthewidthofeachp

8、erson’shairisabitdifferent，youcouldprobablyfitabout10ofthesevirus-builtbatteryparts，sidet