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1、18秋华师《综合英语（6）》在线作业1、DFKPR2、AHKMS3、BEKOQ4、DEJOT5、BGLNT一、阅读理解共10题，100分1、Weallknowthatthenormalhumandailycycleofactivityisofsome7-8hours'sleepalternationwithsome16-17hour'swakefulnessandthat,broadlyspeaking,thesleepnormallycoincideswiththehoursofdarkness.Ourpresentconcerniswithho
2、weasilyandtowhatextentthiscyclecanbemodified.Thequestionisnomereacademicone.Theease,forexample,withwhichpeoplecanchangefromworkinginthedaytoworkingatnightisaquestionofgrowingimportanceinindustrywhereautomationcallsforround-the-clockworkingofmachines.Itnormally,takesfromfiveday
3、stooneweekforapersontoadapttoareversedroutineofsleepandwakefulness,sleepingduringthedayandworkingatnight.Unfortunately,itisoftenthecaseinindustrythatshiftsarechangedeveryweek;apersonmayworkfrom12midnightto8a.m.oneweek,8a.m.to4p.m.thenext,and4p.m.to12midnightthethirdandsoon.Thi
4、smeansthatnosoonerhashegotusedtooneroutinethanhehastochangetoanother,sothatmuchofhistimeisspentneitherworkingnorsleepingveryefficiently.Theonlyrealsolutionappearstobetohandoverthenightshifttoanumberofpermanentnightworkers.Aninterestingstudyofthedomesticlifeandhealthofnight-shi
5、ftyworkerswascarriedoutbyBrownin1957.Shefoundahighincidenceofdisturbedsleepandotherdisordersamongthoseonalternatingdayandnightshifts,butnoabnormaloccurrenceofthesephenomenaamongthoseonpermanentnightwork.Thislattersystemthenappearstobethebestlong-termpolicy,butmeanwhilesomethin
6、gmaybedonetorelievethestrainsofalternatedayandnightworkbyselectingthosepeoplewhocanadaptmostquicklytothechangesofroutine.Onewayofknowingwhenapersonhasadaptedisbymeasuringhisbodytemperature.Peopleengagedinnormaldaytimeworkwillhaveahightemperatureduringthehoursofwakefulnessandal
7、owoneatnight;whentheychangetonightworkthepatternwillonlygraduallygobackmatchthenewroutineandthespeedwithwhichitdoessoparallels,broadlyspeaking,theadaptationofthebodyasawhole,particularlyintermsofperformance.Therefore,bytakingbodytemperatureatintervalsoftwohoursthroughouttheper
8、iodofwakefulnessitcanbeseenhowquicklyapersoncanadapttoarevers
