六级改错练习五_六级指导

Almosteverynewinnovationgoesthroughthreephases.Wheninitiallyintro ducingintothemarket,theprocess1._____ofadoptionisslow.Theearlymodelsa reexpensiveandhardtouse,andperhapsevenunsafe.Theeconomicimpactisrelat ivelygreat.2._____Thesecondphaseistheexplosiveone,wheretheinnovationw asrapidlyadoptedbyalargenumberofpeople.Itgets3._____cheaperandeasiert ouseandbecomessomethingfamiliar.Andtheninthethirdstage,diffusionofthe innovationslowsdownagain,asifitpermeatesoutacrosstheeconomy.4._____Du ringtheexplosivephase,wholenewindustriesspringuptoproducethenewproduc torinnovation,andtoserviceit.Forexample,duringthe1920s,therewasdramat ic5._____accelerationinautoproduction,from1.9millionin1920to4.5millio nin1929.Thisboomwasaccompaniedwithall6._____sortsofotheressentialacti vitiesnecessaryforanauto-basednation:Roadshadtobeenbuiltforthecarsto7 ._____runon;refineriesandoilwells,toprovidethegasoline;andgarages,tor epairit.8._____Historically,thesamepatternisrepeatedagainandagainwith innovations.Theconstructionoftheelectricalsystemrequestedanenormousea rlyinvestmentingenerationand9._____distributioncapacity.Theintroducti onoftheradiowasfollowedbyabuyingspree(无节制的狂热行为)byAmericanswhatquicklybroughtradiosintoalmosthalfofallhouseholds10 ._____by1930,upfromnearlynonein1924.答案 1.introducing改introduced;2.great改small;3.was改is;4.as后面的if去掉；5.was后面加a;6.with改by;7.been改be;8.it改them;9.requested改required;10.what 改that.