- 阅读理解A
题干：Weallknowthatthenormalhumandailycycleofactivityisofsome7-8hours’sleepalternationwithsome16-17hours’wakefulnessandthat,broadlyspeaking,thesleepnormallycoincideswiththehoursofdarkness.Ourpresentconcerniswithhoweasilyandtowhatextentthiscyclecanbemodified.Thequestionisnomereanacademicone.Theease,forexample,withwhichpeoplecanchangefromworkinginthedaytoworkingatnight,isaquestionofgrowingimportanceinindustrywhereautomationcallsforround-the-clockworkingofmachines.Itnormallytakesfromfivedaystooneweekforapersontoadapttoareversedroutineofsleepandwakefulness,sleepingduringthedayandworkingatnight.Unfortunately,itisoftenthecaseinindustrythatshiftsarechangedeveryweek;apersonmayworkfrom12midnightto8a.m.oneweek,8a.m.to4p.m.thenext,and4p.m.to12midnightthethird,andsoon.Thismeansthatnosoonerhashegotusedtooneroutinethanhehastochangetoanother,sothatmuchofhistimeisspentneitherworkingnorsleepingveryefficiently.Theonlyrealsolutionappearstobetohandoverthenightshifttoanumberofpermanentnightworkers.AninterestingstudyofthedomesticlifeandhealthofnightshiftworkerswascarriedoutbyBrownin1957.Shefoundahighincidence（发生率）ofdisturbedsleepandotherdisordersamongthoseonalternatingdayandnightshifts,butnoabnormaloccurrenceofthesephenomenaamongthoseonpermanentnightwork.Thislattersystemthenappearstobethebestlong-termpolicy,butmeanwhilesomethingmaybedonetorelievethestrainsofalternatedayandnightworkbyselectingthosepeoplewhocanadaptmostquicklytothechangesofroutine.Onewayofknowingwhenapersonhasadaptedisbymeasuringhisbodytemperature.Peopleengagedinnormaldaytimeworkwillhaveahightemperatureduringthehoursofwakefulnessandalowoneatnight;whentheychangetonightwork,thepatternwillonlygraduallygobacktomatchthenewroutineandthespeedwithwhichitdoessoparallels,broadlyspeaking,theadaptationofthebodyasawhole,particularlyintermsofperformance.Therefore,bytakingbodytemperatureatintervalsoftwohoursthroughouttheperiodofwakefulnessitcanbeseenhowquicklyapersoncanadapttoareversedroutine,andthiscouldbeusedasabasisforselection.Sofar,however,suchaformofselectiondoesnotseemtohavebeenappliedinpractice.
题目：It is possible to find out if a person has adapted to the changes of routine by measuring his body temperature because（）. - A 、body temperature changes when the cycle of sleep and wakefulness alternates
- B 、body temperature changes when he changes to night shift or back
- C 、the temperature reverses when the routine is changed
- D 、people have higher temperatures when they are working efficiently
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参考答案【正确答案：D】
本题考了一个重要的细节：为什么量体温能看出一个人是否已经适应新的工作时间呢？根据4第段第3句，正常日班工作时工作效率高，体温也稍高。文章接着又说，改变工作安排之后，有一个适应过程，体温变动模式也随着适应程度的变化而变化，效率高时体温也高一些。所以选项D是答案。这一点还可以从这一句最后的particularly in terms of performance中看出。选项A不全面，没有指出体温变化与身体的适应程度大体上一致这一点，也没有指出可以根据其工作好坏判断。同样的道理，选项B和选项C也不对。
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