2015屆高考英語第二輪知識點訓練題49

任務型閱讀專練ANaturallyregulateyoursleep-wakecycleMelatonin（褪黑激素）isanaturallyoccurringhormone（激素）thathelpsregulateyoursleep-wakecycle．Melatoninproductioniscontrolledbylightexposure．Yourbrainshouldproducemoreintheevening,whenit'sdark,tomakeyousleepy,andlessduringthedaywhenit'slightandyouwanttostayawake．However,manyaspectsofmodernlifecandisturbyourbody'snaturalproductionofmelatoninandyoursleep-wakecycle．Spendinglongdaysinanofficeawayfromnaturallight,forexample,canimpactyourdaytimewakefulnessandmakeyourbrainsleepy．Thenbrightlightsatnight—especiallyfromhoursspentinfrontoftheTVorcomputerscreen—canholdbackyourbody'sproductionofmelatoninandmakeithardertosleep,However,therearewaysforyoutonaturallyregulateyoursleep-wakecycle,improveyourbody'sproductionofmelatonin,andkeepyourbrainonahealthyschedule．Increaselightexposureduringtheday☆Removeyoursunglassesinthemorningandletlightontoyourface．☆Spendmoretimeoutsideduringdaylight．Trytotakeyourworkbreaksoutsideinsunlight,exerciseoutside,orwalkyourdogduringthedayinsteadofatnight．☆Letasmuchlightintoyourhome/workspaceaspossible．Keepcurtainsandblindsopenduringtheday,moveyourdeskclosertothewindow．☆Ifnecessary,usealighttreatmentbox．Alighttreatmentboxcancreatesunshineandcanbeespeciallyusefulduringshortwinterdayswhenthere'slimiteddaylight．Improvemelatoninproductionatnight☆Turnoffyourtelevisionandcomputer．Manypeopleusethetelevisiontofallasleeporrelaxattheendoftheday．Notonlydoesthelightholdbackmelatoninproduction,buttelevisioncanactuallyexcitethemind,ratherthanrelaxingit．Trylisteningtomusicoraudiobooks,orpracticingrelaxationexercises．IfyourfavoriteTVshowisonlateatnight,recorditforviewingearlierintheday．☆Don'treadfromabacklitdeviceatnight（suchasaniPad）．Ifyouuseaportableelectronicdevicetoread,useaneReaderthatisnotbacklit,i．e．onethatrequiresanadditionallightsourcesuchasabedsidelamp.☆Changeyourlightbulbs．Avoidbrightlightsbeforebed,uselow-wattagebulbsinstead．☆Whenit'stimetosleep,makesuretheroomisdark．Thedarkeritis,thebetteryou'llsleep．Coverelectricaldisplays,useheavycurtainsorshadestoblocklightfromwindows,ortryaneyemasktocoveryoureyes．☆Useaflashlighttogotothebathroomatnight．Aslongasit'ssafetodoso,keepthelighttoaminimumsoitwillbeeasiertogobacktosleep．Title:Naturallyregulateyoursleep-wakecyclePassageoutlineSupportingdetailsDecidingfactorMelatonin,ahormonethat（66）_________naturally,helpsregulateyoursleep-wakecycle．☆（67）______________melatoninintheeveningmakesyousleepy,whilelessmelatoninduringthedaymakesyou（68）____________．Disturbing（69）______________☆Longdaysinanofficeawayfrom（70）_______________light☆LonghoursinfrontoftheTVorcomputerscreen（71）____________toincreasinglightexposure☆（72）______________offyoursunglassesinthemorning☆Spendmoretimeoutsideduringdaylight☆KeepcurtainsopenandsitclosetothewindowUsealighttreatmentboxespeciallyin(73)Methodsofimprovingmelatoninproduction☆Listentomusic（74）___________________ofwatchingTV☆Avoid（75）______________fromabacklitdevice☆Uselow-wattagebulbs☆UseheavycurtainstomaketheroomdarkUseaflashlighttogotothebathroomBDoweneedan“IvyLeague”?ThenewsofthisChinese“IvyLeague”hasreceivedmixedresponsesfromthepublicandpress.Somenegativecriticshavedismisseditasyetanotherexampleofthewishfulcopyingofinternationalpracticeswithoutfullyunderstandingthem.Otherssaythatthe“IvyLeague”isnotnecessarybutthattheunionisagoodidea,onethatcouldpromoteacademicdevelopment.Sowhat’syouropiniononaChinese“IvyLeague”?Doweneedone?Yes.IvyLeagueornot,nineofChina’sbestuniversitiescooperatingisagoodthing.Theseuniversitiescombiningresourcescouldcreateabetterenvironmentforstudentsandforresearch.Itcouldalsosavealotoftimeandresourcesbecauseitwouldmeanfewerunnecessaryinvestmentsforsomeoftheuniversities.Allowingstudentstomovetoorhaveexchangeswithotheruniversitiescouldbroadentheirhorizons,improvetheirsocialskillsandcreatemoreemploymentopportunities.Theresultscouldbemoreimportantthanlessonsandachievements.Theterm“IvyLeague”carriesasenseofacademicexcellence,traditionandreputation.Ifborrowingsuchatermcouldencouragestudents’andprofessors’mentalstateandimproveChinesehighereducation,thenthere’snoreasonnottodoit.No.Universitiesshoulddosomeworkonincreasingcooperationinsteadofcopyingan“IvyLeague”model.ManyChineseuniversitiesalreadyhavesuchcooperationwitheachother.Ifthiscooperationwereassociatedwiththe“IvyLeague”,itwouldjustdistract(分散)attentionandresourcesandhaveanegativeeffect.TheseChineseuniversitiesareallstate-runandmostgettheirfundingfromthegovernment.They’requitesimilartoeachotherinmanywaysandmorecooperationwouldn’tbringaboutasmuchpotentialabilityasbetween,say,publicandprivate,orChineseandforeignuniversities.Chinashouldfinditsownwaytodevelopworld-classuniversitiesinsteadofbycopyingsomeforeignpractices.Wehaveourownuniqueconditionsandforeignlessonsoftendon’tapplywellhere.IvyinAmericaOriginallyreferredtoanathleticconferenceofeightfamousuniversitiesinthe71__________ofAmericaIvyinChinaMemberuniversitiesNinefamousuniversitiesPurposesoftheunionToexchangestudents*To72__________theacademicachievements*Toworkonjointprograms73______fromthepublicPositivesi