【阅读理解Thereisnolivingcreaturethatdoesnotneedsleeporcompleteresteveryday.Ifyouwanttoknowwhyjusttrydoingwithoutsleepforalongperiodoftime!Youwilldiscoverthatyourmindandbodywouldeasilyb】

　　阅读理解

　　Thereisnolivingcreaturethatdoesnotneedsleeporcompleteresteveryday.Ifyouwanttoknowwhyjusttrydoingwithoutsleepforalongperiodoftime!Youwilldiscoverthatyourmindandbodywouldeasilybemadeangryandfindithardtothinkclearlyorbringyourattentiononyourwork.Sosleepisquitesimplythetimewhenthecells(细胞)ofyourbodyrecoverfromtheworkofthedayandbuildupsuppliesofenergyforthenextperiodofactivity.

　　Oneofthethingsweallknowaboutsleepisthatweareunconscious(无知觉的)insleep.Wedonotknowwhatisgoingonaroundus.Butthatdoesnotmeanthebodystopsalltheactivities.Thenecessaryorgans(器官)continuetoworkduringsleepbutmostofthebodyfunctions(功能)aresloweddown.Yourbodytemperaturebecomeslowerwhenyouaresleepingwhichisthereasonwhypeoplegotosleepundersomekindofcovers.

　　Andeventhoughyouareunconsciousmanyofyourreflexes(反应能力)stillwork.Forexampleifsomeonetouchesyourfootslightlyyouwillputitawayinyoursleeporevenbrushaflyfromyourforehead.Youdothesethingswithoutknowingit.

　　1．Ifamandidnotsleepforalongtime________.

　　[]

　　A．hismindwouldbecometiredbuthisbodycouldworkproperly

　　B．itwouldbehardtomakehimangry

　　C．hewouldnotthinkclearlyorbringhisattentiononhiswork

　　D．hewouldbecometiredoutbutcouldkeeponworking

　　2．Sleepcannot________.

　　[]

　　A．makeyourbodyrecover

　　B．buildupyourstrength

　　C．addyourcells

　　D．behelpfultoyourmind

　　3．Whenyouareasleep________.

　　[]

　　A．itishardforyoutoknowwhatisgoingonaround

　　B．youstopalltheactivities

　　C．yournecessaryorgansstopworking

　　D．yourbodyfunctionsareallsloweddown

　　4．Accordingtothetextweknowthat________.

　　[]

　　Awhenapersonissleepinghisbodytemperaturebecomeslower

　　B．insomeone’ssleepheknowsnothingexceptforhissleeping

　　C．it’spossibleforsomeonetobrushaflyfromhisfore-headwithconsciousnessinhissleep

　　D．onecansleepsodeeplyeventhatyourtouchinghisfootcannotcausehisreflex