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1、英语任务型阅读及书面表达专练13一.任务型阅读认真阅读下面短文,并根据所读内容在文章后表格中的空格里填入最恰当的单词。Naturallyregulateyoursleep-wakecycleMelatonin(褪黑激素)isanaturallyoccurringhormone(激素)thathelpsregulateyoursleep-wakecycle.Melatoninproductioniscontrolledbylightexposure.Yourbrainshouldproducemoreintheeven
2、ing,whenit'sdark,tomakeyousleepy,andlessduringthedaywhenit'slightandyouwanttostayawake.However,manyaspectsofmodernlifecandisturbyourbody'snaturalproductionofmelatoninandyoursleep-wakecycle.Spendinglongdaysinanofficeawayfromnaturallight,forexample,canimpactyourd
3、aytimewakefulnessandmakeyourbrainsleepy.Thenbrightlightsatnight—especiallyfromhoursspentinfrontoftheTVorcomputerscreen—canholdbackyourbody'sproductionofmelatoninandmakeithardertosleep,However,therearewaysforyoutonaturallyregulateyoursleep-wakecycle,improveyourb
4、ody'sproductionofmelatonin,andkeepyourbrainonahealthyschedule.Increaselightexposureduringtheday☆Removeyoursunglassesinthemorningandletlightontoyourface.☆Spendmoretimeoutsideduringdaylight.Trytotakeyourworkbreaksoutsideinsunlight,exerciseoutside,orwalkyourdogdur
5、ingthedayinsteadofatnight.☆Letasmuchlightintoyourhome/workspaceaspossible.Keepcurtainsandblindsopenduringtheday,moveyourdeskclosertothewindow.☆Ifnecessary,usealighttreatmentbox.Alighttreatmentboxcancreatesunshineandcanbeespeciallyusefulduringshortwinterdayswhen
6、there'slimiteddaylight.Improvemelatoninproductionatnight☆Turnoffyourtelevisionandcomputer.Manypeopleusethetelevisiontofallasleeporrelaxattheendoftheday.Notonlydoesthelightholdbackmelatoninproduction,buttelevisioncanactuallyexcitethemind,ratherthanrelaxingit.Try
7、listeningtomusicoraudiobooks,orpracticingrelaxationexercises.IfyourfavoriteTVshowisonlateatnight,recorditforviewingearlierintheday.☆Don'treadfromabacklitdeviceatnight(suchasaniPad).Ifyouuseaportableelectronicdevicetoread,useaneReaderthatisnotbacklit,i.e.onethat
8、requiresanadditionallightsourcesuchasabedsidelamp.☆Changeyourlightbulbs.Avoidbrightlightsbeforebed,uselow-wattagebulbsinstead.☆Whenit'stimetosleep,makesuretheroomisdark.Thed