完形填空：下面的短文有l5处空白，请根据短文内容为每处空白确定l个最佳选项。Obesity(肥胖)CausesGlobalWarming.Thelistofillsattributabletoobesitykeepsgrowing:Lastweek,obesepeoplewereaccusedofcausingglobalwarming.This______(51)comesfromSheldonJacobsonoftheUniversityofIllinois,US,andadoctoralstudent,LauraMcLay.Theirstudy______(52)howmuchextragasolineisneededtohaulfatAmericansaround.Theanswer,theysay,isabilliongallonsofgasperyear.______(53)Therehasbeen______(54)fortaxesonjunkfoodinrecentyears.USeconomistMartinSchmidtsuggestsataxonfastfood______(55)topeople’scars."Wetaxcigarettespartlybecauseoftheirhealthcost,"Schmidtsaid."Similarly,leadingalazylifestylewillend______(56)costingtaxpayersmore."USpoliticalscientistEricOliversaidhisfirstinstinctwastolaughatthesegasandfastfoodarguments.Butsuch______(57)aregettingattention.AttheUSObesitySociety'sannualmeeting,oneperson______(58)obesitywithcaraccidentdeaths,andanothercorrelatedobesitywithsuicides.Nooneaskedwhethertherewasreallyacause-and-effectrelationship."Thefunnythingwasthateveryonetookit______(59)."Oliversaid.Ina1960sstudy,childrenwere______(60)drawingsofchildrenwithdisabilitiesandwithoutthem,andadrawingofanobesechild.Theywereasked______(61)theywouldwantforafriend?Theobesechildwaspickedlast.Threeresearchersrecentlyrepeatedthestudy______(62)collegestudents.Onceagain,______(63)noone,notevenobesepeople,likedtheobeseperson."Obesitywasstigmatized."theresearcherssaid.But,researcherssay,getting______(64)isnotlikequittingsmoking.Peoplestruggletostopsmoking,and,intheend,manysucceed.Obesityisdifferent.SciencehasshownthattheyhavelimitedpersonalcontrolovertheirweightGenesalso______(65)apart.53.(单项选择题) A: turns B: means C: says D: costs