根据以下材料，回答 Usingacomputerorsmartphoneatnightcancauseusto11onthepounds,newresearchhasrevealed. Thestudyfoundalinkbetweenbluelight12--bluelightis13bysmartphonesandtables--andincreasedhunger.Itfoundthatexposuretothelightincreaseshungerlevelsforseveralhoursandevenincreaseshungerlevels14eatingameal. ResultsoftheUSstudyshowthatblue-enrichedlightexposure,comparedwith15lightexposure,was16withanincreaseinhungerthatbegan15minutesafterlightonsetandwasstillpresentalmosttwohoursafterthemeal.Bluelightexposurehasalsoalreadybeenshowntodecreased17intheevening,increasingtheriskofinsomnia. Studyco-authorIvyCheung,ofNorthwesternUniversityinChicago,said,"Asinglethree-hourexposuretoblue-enrichedlightintheevening18impactedhungerandglucosemetabolism.""Theseresultsareimportantbecausetheysuggestthat19environmentallightexposureforhumansmayrepresentanovel20ofinfluencingfoodintakepatternsandmetabolism." Thestudygroup2110healthyadultswithregularsleepandeatingscheduleswhoreceived 22carbohydrate-richmeals.Theycompletedafour-daytrial23dimlightconditions,whichinvolvedexposuretolessthan20luxduring16hours24andlessthanthreeluxduringeighthoursofsleep.Ondaythreetheywereexposedtothreehoursof260lux,blue-enrichedlightstarting10.5hoursafterwakingup,andtheeffectswerecomparedwithdimlightexposureondaytwo. MsCheungsaidmoreresearchisneededtodeterminethe25ofactioninvolvedintherelationshipbetweenlightexposure,hungerandmetabolism.
A.pile B.accumulate C.add D.store正确答案A
