2021年高考英语题型训练7选5八含解析.docx

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1、题型训练7选5（八）根据短文内容，从短文后的选项中选出能填入空白处的最佳答案，选项中有两项为多余选项。It'ssuchacommoneventthatyouprobablyneveraskedyourselfwhyyousleep.36.Infact,forsleepresearchersit'soneofthebiggestunansweredquestionsinthefield.Stopandthinkaboutitforasecond.Whyshouldwesleep?37.Butwesleepeverynightevenwhenwehavehadplentyofrest.Therea

2、re,nodoubt,severaldifferentanswerstothisquestionbutlet'sjustconsideronegeneralpurposeofsleep:38.Humanbeingsarecreaturesthatarenormallyactiveduringdaylighthourswhenoursensesfunctionsmosteffectively.39.Wecan'tseeobjectswell,ourcolorvisionisentirelylost,andwedon'thavethesmellingorhearingsharpnessofothe

3、ranimals.Soitactuallydoesmakesensetohaveusstaywhereweareduringthedangerousperiodwhennight-wakinganimalsarewalkinghereandthere.Andonesurewaytomakesurewedon'tfalldowneverywhereandgetlostoreatenistohaveusnotmoveforsevenoreighthoursrisingagainonlywhenthelightisbackandoursurvivalchancesarebetter.It'snott

4、heonlyreasonwesleep.40.Perhapseventhemostimportantone.A.Atnight,humansdoratherpoorly.B.Butfromascientificpointofviewthisisfarfromanordinarymatter.C.Shouldthatputhumanbeingsinaterriblesituation?D.Sleepasasurvivalapproach.E.Furthermore,ifyouweredesigningananimalwouldyouhaveitcomeintolongperiodsofuncon

5、sciousnesseverytwenty-fourhours?F.Butintermsofevolutionitmayhavebeenoneofthefirstreasons.G.Isitbecausewegettired?参考答案36.B37.G38.D39.A40.F