根据下面资料，回答 MillionsofAmericanslieawakeatnightcountingsheep,orhaveastiffdrinkorpopanallergypill,hopingitwillmakethemdrowsy.Butexpertsagreeallthatself-medicatingisabadidea,andthecausesofchronicinsomniaremainmysterious. Almostathirdofadultshavetroublesleeping,andabout10percenthavesymptomsofdaytimeimpairmentthatsignaltrueinsomnia.Sufferersreadilycitetheresultingproblems:walkingaroundinafog,asmemoryandothercognitivefunctionsslowly.Dozingoffatthewheeloratwork.Depression.Lackofenergy.Butforallthecomplaints,scientistsknowsurprisinglylittleaboutwhatcauseschronicinsomnia,itshealthconsequencesandhowbesttotreatit,apanelofspecialistsbroughttogetherbytheNationalInstitutesofHealthconcludedWednesday. Twothingsareclear,thepanelfound:Chronicinsomniaisamajorpublichealthproblem.Andtoomanypeopleareusingunproventherapies,evenwhilethereareafewtreatmentsthatdowork. Amongthepanel′sfindings:Cognitive/behavioraltherapy--apsychology-basedtreatmentthattrainspeopletoreduceanxietyandtakeothersleep-promotingsteps--isveryeffective,anddoesn′tcausesideeffects.Butitcanbehardtofindhealthproviderstrainedinthetechniques.Insomniacsshouldcheckwithboard-certifiedsleepspecialistsandpsychologists. NewerprescriptionsleeppillscalledSonata,AmbienandLunestaworkwithoutmanyoftheside-effectconcernsofolderagentsknownasbenzodiazepines(苯二氮类镇静药).OnestudyofLunestashowedeffectivenesswithsixmonthsofuse,butmoreresearchonlong-termuseofallthreeisneeded,aschronicinsomniacanlingerforyears. Themostcommonlyusedtreatmentsarealcoholandover-the-countersedatingantihistamines(抗组胺剂)likeBenadryl.Alcoholuseactuallydisruptsqualitysleep,andantihistaminescancause lingeringdaytimesedationandothercognitiveproblems. Themostcommonprescriptioninsomniamedicineisanolder,sedatingantidepressantcalledtrazodone,eventhoughthere′snogoodevidencethatitoffersmorethanatwo-weekbenefit,anditcomeswithsideeffects. Oneofmosteffectivewaystodealwithchoricinsomniais__________.
A.to have a stiff drink B.to pop an allergy pill C.to sleep and get up early D.cognitive/behavioral therapy正确答案D
