中国大学MOOC:Task1①UnlikeBritain,theUSdoesnothaveanationalhealthcareservice.Thegovernmentdoeshelppayforsomemedicalcareforpeoplewhoareonlowincomesandforoldpeople,butmostpeoplebuyinsurance(保险)tohelppayformedicalcare.Theproblemsofthosewhocannotaffordinsuranceareanimportantpoliticalsubject.②InBritain,whenpeopleareill,theyusuallygotoafamilydoctorfirst.However,peopleinAmericasometimesgostraighttoanexpertwithoutseeingtheirfamilydoctorfirst.Childrenareusuallytakentoadoctorwhoisanexpert,inthetreatment(治疗)ofchildren.InBritain,ifapatientneedstoseeaspecialistdoctor,theirfamilydoctorwillusuallyrecommendaspecialist.③Doctorsdonotgotopeopleshomeswhentheyareill.Peoplealwaysmakeappointmentstoseethedoctorinthedoctorsoffice.Inaserioussituation,peoplecallforanambulance(救护车).InAmerica,hospitalsmusttreatallseriouslyillpatients,eveniftheydonothavemedicalinsurance.Thegovernmentwillthenhelppayforsomeofthecostofthemedicalcare.题目：SomemedicalcareispaidbytheU.S.governmentfor__________.