英语六级阅读理解模拟训练.docx

英语六级阅读理解模拟训练

英语六级考试已引起全国各高等院校及有关教育领导部门对大学英语教学的`重视，调动了师生的积极性。效度研究的大量统计数据和实验材料证明大学英语六级考试不但信度高，而且效度高。下面是小编分享的英语六级阅读理解模拟训练，一起来看一下吧。英语六级阅读理解模拟训练篇一：Youstareatwaterfallforaminuteortwo,andthenshiftyourgazetoitssurroundings.Whatyounowseeappearstodriftupward.Theseopticalillusionsoccurbecausethebrainisconstantlymatchingitsmodelofrealitytosignalsfromthebody’ssensorsandinterpretingwhatmustbehappening—thatyourbrainmusthavemoved,nottheother;thatdownwardmotionsisnownormal,soachangefromitmustnowbeperceivedasupwardmotion.Thesensorsthatmakethismagicareoftwokinds.Eacheyecontainsabout120millionrods,whichprovidesomewhatblurryblackandwhitevision.Thesearethewindowsofnightvision;onceadaptedtothedark,theycandetectacandleburningtenmilesaway.Colorvisionineacheyecomesfromsixtosevenmillionstructurescalledcones.Underidealconditions,everyconecan“see”theentirerainbowspectrumofvisiblecolors,butonetypeofconeismostsensitivetored,anothertogreen,athirdtoblue.Rodsandconessendtheirmessagespulsinganaverage20to25timespersecondalongtheopticnerve.Weseeanimageforafractionofasecondlongerthanitactuallyappears.Inmovies,reelsofstillphotographsareprojectedontoscreensat24framespersecond,trickingoureyesintoseeingacontinuousmovingpicture.Likeapparentmotion,colorvisionisalsosubjecttounusualeffects.Whendaygiveswaytonight,twilightbringswhatthepoetT.S.Eliotcalled“theviolethour.”Alightlevelsfall,therodsbecomeprogressivelylessresponsive.Rodsaremostsensitivetotheshorterwavelengthsofblueandgreen,andtheyimpartastrangevividnesstothegarden’sblueflowers.However,lookatawhiteshirtduringthereddishlightofsunset,andyou’llstillseeitinits“true”color—white,notred.Oureyesareconstantlycomparinganobjectagainstitssurroundings.Theythereforeobservetheeffectofashiftinthecolorofilluminatingonboth,andadjustaccordingly.Theeyescandistinguishseveralmilliongraduationsoflightandshadeofcolor.Eachwakingsecondtheyflashtensofmillionsofpiecesofinformationtothebrain,whichweavesthemincessantlyintoapictureoftheworldaroundus.Yetallthisisdoneatthebackofeacheye