题目内容：
Questionsarebasedonthefollowingpassage:
Whatdowemeanbyasatisfactorystandardofliving?Obviously,itmustincludethebasicnecessitiesoflifesuchasfood,clothingandshelter．Togetthesenecessitiesonregularbasis,apersonmusthaveareliableincome．Butwehaveotherneedswhichwouldprobablyalsobeincludedasbasic,suchashealthandeducationfacilities．
Wemaythinkofalloftheseasourneeds．Yetmostofuswouldbefarfromsatisfiedifwehadnothingmorethanthesewhicharesuppliedforus．Weallenjoyextraincometospendonthingslikebooks,sportsorhobbies．Sometimeswesavesomeofthisextraincometopayforfutureexpenseofthistypeonholidays．Sowemustaddourwantstoourbasicneeds．Ourstandardoflivingisthedegree,towhichthese
needsandwantsaresatisfied．
Butastimegoeson,whatwethinkofasourbasicneedschanges．Twentyyearsagoatelevisionwouldhavebeenaluxury,andstillisinmanycountriesnow,Evennowwecannotsayitisaneedinthesamesenseasfood,clothingandshelter．Yetifmostofthepeopleofacountryhaveone,itcomestobeacceptedasaneed．Itispossiblethereforetohavefood,clothingandshelterandstillbepoorbythestandardsofourownsociety．
Whatweneedinlifeisdividedinto（ ）accordingtothisarticle． A．thebasicnecessitiesandluxury
B．manykindsofneedsuchasfood,clothingandhouses
C．fourgroupsthebasicnecessities,luxury,reliableincomeandfutureexpense
D．thebasicnecessitiesandreliableincome
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答案解析：