考研英语历年真题来源报刊阅读100篇text5

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1、大家网[www.TopSage.com]考研英语历年真题来源报刊阅读100篇Text5Behindthebleedingedge　　MANKIND’Sprogressindevelopingnewgizmosisoftenreferredtoasthe"marchoftechnology".Thatconjuresupimagesofconstantandrelentlessforwardmovementorchestratedwithmilitaryprecision.Inreality,technologicalp

2、rogressisratherlessorderly.SometechnologiesdoindeedimproveatsuchapredictablepacethattheyobeysimpleformulaesuchasMoore’slaw,whichactsasabattleplanforthesemiconductorindustry.Othertechnologiesproceedbypainfullurches-thinkofthirdgenerationmobilephones,ornewversion

3、sofMicrosoftWindows.Andtherearesomecases,particularlyinthedevelopingworld,whentechnologicalprogresstakestheformofaleapfrog.　　Suchleapfrogginginvolvesadoptinganewtechnologydirectly,andskippingovertheearlier,inferiorversionsofitthatcamebefore.Byfarthebestknownexa

4、mpleisthatofmobilephonesinthedevelopingworld.Fixedlinenetworksarepoorornonexistentinmanydevelopingcountries,sopeoplehaveleapfroggedstraighttomobilephonesinstead.ThenumberofmobilephonesnowfaroutstripsthenumberoffixedlinetelephonesinChina,IndiaandsubSaharanAfr

5、ica.　　Thereareotherexamples.Incandescentlightbulbs,introducedinthelate1870s,areslowlybeingdisplacedinthedevelopedworldbymoreenergyefficientlightemittingdiodes(LEDs),inapplicationsfromtrafficlightstodomesticlighting.LEDscould,however,haveanevengreaterimpactinpa

6、rtsofthedevelopingworldthatlackmainspowerandelectriclightingaltogether.LEDs’greaterenergyefficiencymakesitpossibletorunthemfrombatterieschargedbysolarpanelsduringtheday.　　Beingbehindthe"bleedingedge"oftechnologicaldevelopmentcansometimesbeagoodthing,inshort.Itme

7、ansthatearlyversionsofatechnology,whichmaybebuggy,unreliableorotherwiseinferior,canbeavoided.America,forexample,wasthefirstcountrytoadoptcolourtelevision,whichexplainswhyAmericantelevisionstilllookssobadtoday:othercountriescametothetechnologylaterandadoptedtechn

8、icallysuperiorstandards.　　Thelessontobedrawnfromallofthisisthatitiswrongtoassumethatdevelopingcountrieswillfollowthesametechnologicalcourseasdevelopednations.Havingsk