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1、1995年全国硕士研究生入学统一考试英语试题—完型填空Directions:Foreachnumberedblankinthefollowingpassage,therearefourchoicesmarked[A],[B],[C]and[D].ChoosethebestoneandmarkyouranswerontheANSWERSHEETbyblackeningthecorrespondingletterinthebrackets.(10points)Sleepisdividedintoperiodsofso-calledREMsleep,characterizedby
2、rapideyemovementsanddreaming,andlongerperiodsofnon-REMsleep.1kindofsleepisatallwell-understood,butREMsleepis2toservesomerestorativefunctionofthebrain.Thepurposeofnon-REMsleepisevenmore3.Thenewexperiments,suchasthese4forthefirsttimeatarecentmeetingoftheSocietyforSleepResearchinMinneapolis,s
3、uggestfascinatingexplanations5ofnon-REMsleep.Forexample,ithaslongbeenknownthattotalsleep6is100percentfataltorats,yet,7_examinationsofthedeadbodies,theanimalslookcompletelynormal.Aresearcherhasnow8themysteryofwhytheanimalsdie.Therats9bacterialinfectionsoftheblood,10theirimmunesystems—thesel
4、f-protectingmechanisrnagainstdisease—hadcrashed.1.[A]Either[B]Neither[C]Each[D]Any2.[A]intended[B]required[C]assumed[D]inferred3.[A]subtle[B]obvious[C]mysterious[D]doubtful4.[A]maintained[B]described[C]settled[D]afforded5.[A]inthelight[B]byvirtue[C]withtheexception[D]forthepurpose6.[A]redu
5、ction[B]destruction[C]deprivation[D]restriction7.[A]upon[B]by[C]through[D]with8.[A]paidattentionto[B]caughtsightof[C]laidemphasison[D]castlighton9.[A]develop[B]produce[C]stimulate[D]induce10.[A]if[B]asif[C]onlyif[D]ifonly121996年全国硕士研究生入学统一考试英语试题—完型填空Directions:Foreachnumberedblankinthefoll
6、owingpassage,therearefourchoicesmarked[A],[B],[C]and[D].ChoosethebestoneandmarkyouranswerontheANSWERSHEETbyblackeningthecorrespondingletterinthebrackets.(10points)Vitaminsareorganiccompoundsnecessaryinsmallamountsinthedietforthenormalgrowthandmaintenanceoflifeofanimals,includingman.Theydon
7、otprovideenergy, 41 dotheyconstructorbuildanypartofthebody.Theyareneededfor 42 foodsintoenergyandbodymaintenance.Therearethirteenormoreofthem,andif 43 ismissingadeficiencydiseasebecomes 44 .Vitaminsaresimilarbecausetheyaremadeofthesameelements—usuallycarbon,hy
