Almosteveryoneisafraidofsomething---snakes,heights,publicspeakingandsoon.Itisnormalandcanevenbehelpfultoexperiencefearsometimes.Indangeroussituations,fearcankeepourbodiesalert(警醒的)sothatwecanactquic

　　Almosteveryoneisafraidofsomething---snakes,heights,publicspeakingandsoon.

　　Itisnormalandcanevenbehelpfultoexperiencefearsometimes.Indangeroussituations,fearcankeepourbodiesalert(警醒的)sothatwecanactquicklytoprotectourselves.

　　Butforsomepeople,feardevelopsintoa“phobia”,whichisastrongandunreasonablefearofsomething.Forexample,themajorityofusfeelalittlescaredwhenlookingdownfromatallbuilding.Butpeoplewithheightphobiamayhavetroublebreathing,feeldizzyorturndownagreatjobjustbecausethecompanyisonthe20thfloor.

　　Phobiascanpreventyoufromlivinganormallife.“Peoplewithspiderphobiawouldstayoutoftheirhomeordormitoryroomfordaysiftheythoughtaspiderwaspresent,”KatherinaHauner,aresearcheratNorthwesternUniversity,US,toldABCnews.Thisiswhyscientistshavebeentryingtofindacureforthisdisease.

　　Sincefearcomesfromexperience---fromwhatwearetold,whatweseeothersexperienceandwhathappenstous---somescientiststhinkiftheycan“rewrite”theseunpleasantmemories,theymightbeabletohelppeopleovercometheirphobias.

　　InastudybyHaunerandotherscientists,participantswithspiderphobiawereaskedtofirsttouchaspiderwithapaintbrush.Seeingthatitwasnotactuallydangerous,theythentriedtouchingitwhilewearingaglove.Finally,theycouldholditwiththeirhands.

　　Certainmedicinehasalsobeenfoundtobehelpful.Backin2010,researchersattheUniversityofHiroshima,Japan,injected(注射)aspecialmedicineintoafish---whowasafraidoflight---toturnoffthefearcenterinitsbrain.Fromthenon,thefishnolongerfearedlight.

　　Whilethesearchforsolutionstophobiasismakinggreatprogress,it’sanopenquestionwhethergettingridoffearisgood.Somepeoplewanttousethesemethodstomakesoldiersfightharderinwarsbytakingawaytheirsenseoffear.DaveSmithsonofthecharityAnxietyUKthinksthat’sabadidea.“It’sfearthatpreventsusfromdoingcrazythings,”hesays.“There’sanameforpeoplewhodon’thavefearofconsequences:psychopaths(精神变态者).

　　小题1:Themainpointofthearticleisto___________.A．showuswhatkindofrolefearplaysinourlivesB．discussifitisgoodto