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,technologicalprogressisratherlessorderly.Som

2、etechnologiesdoindeedimproveatsuchapredictablepacethattheyobeysimpleformulaesuchasMoore’slaw,whichactsasabattleplanforthesemiconductorindustry.Othertechnologiesproceedbypainfullurches-thinkofthirdgenerationmobilephones,ornewversionsofMicrosoftWindows.Andtherearesomecases,particularlyinthede

3、velopingworld,whentechnologicalprogresstakestheformofaleapfrog.　　Suchleapfrogginginvolvesadoptinganewtechnologydirectly,andskippingovertheearlier,inferiorversionsofitthatcamebefore.Byfarthebestknownexampleisthatofmobilephonesinthedevelopingworld.Fixedlinenetworksarepoorornonexistentinmany

4、developingcountries,sopeoplehaveleapfroggedstraighttomobilephonesinstead.ThenumberofmobilephonesnowfaroutstripsthenumberoffixedlinetelephonesinChina,IndiaandsubSaharanAfrica.　　Thereareotherexamples.Incandescentlightbulbs,introducedinthelate1870s,areslowlybeingdisplacedinthedevelopedworldby

5、moreenergyefficientlightemittingdiodes(LEDs),inapplicationsfromtrafficlightstodomesticlighting.LEDscould,however,haveanevengreaterimpactinpartsofthedevelopingworldthatlackmainspowerandelectriclightingaltogether.LEDs’greaterenergyefficiencymakesitpossibletorunthemfrombatterieschargedbysolar

6、panelsduringtheday.　　Beingbehindthe"bleedingedge"oftechnologicaldevelopmentcansometimesbeagoodthing,inshort.Itmeansthatearlyversionsofatechnology,whichmaybebuggy,unreliableorotherwiseinferior,canbeavoided.America,forexample,wasthefirstcountrytoadoptcolourtelevision,whichexplainswhyAmericante

7、levisionstilllookssobadtoday:othercountriescametothetechnologylaterandadoptedtechnicallysuperiorstandards.　　Thelessontobedrawnfromallofthisisthatitiswrongtoassumethatdevelopingcountrieswillfollowthesametechnologicalcourseasdevelopednations.Havingsk