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《2019年5月英语二级笔译综合试题及答案》

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,youwillreachthelaststage.Yourbrainwaveswillshowthedeltarhythm.Youmaythinkthatyoustayatthisdeepstagealltherestofthenight,butthatturnsoutnottobethecase.About80minutesafteryoufallintoslumber,youractivitycyclewillincreaseslightly.Thedeltarhythmwilldisappear,tobereplacedbytheactivitypatternofRapidEyeMovementslastsfor8-15minutesandiscalledREMsleep.Duringbothlightanddeepsleep,themusclesinyourbodyarerelaxedbutcapableofmovement.AsyouslipintoREMsleep,urs—eparalyzed.AlthoughyourbrainshowsveryrapidburstsofneuralactivityduringREMsleep,yourbodyisincapableofmoving.paniedbyextensivemuscularinhibition.91.Onthepartofanaveragesleeper,there____ofsleepincycles.A.isonestageB.aretwostagesC.aresixstagesD.arefourstages92.Whenapersonfallsintothestateofsleep,his____.eyeballswillrollaboutabitmindwillrelaxmoreandmore

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