PassageThree
Questions31to35arebasedonthefollowingpassage.
Americansareaveryenergeticandmobilepeople,alwaysontherun;rushingfromoneappointmenttoanother,fromaPTA(ParentTeacherAssociation)meetingtoasocialplanningcommittee.Theyhaveverylittletimetospendpreparingelaborate（精致的，复杂的）everydaymealstobeeatenatleisure.Inmanyhomesitisrareforthewholefamilytositd ownatsuppertogether.Clubsandcommitteesforcethemtograbaquickmealratherthanasit-downsupper.
Whentheydohavethechancetoeatathome,oftentheworkinghousewifepreferstopreparemealsthatcanbequicklyheatedandconsumed.Itisnowonder,therefore,thatAmericahasbecomeashelterforfastfoodconsumption.
Thisgreattr ansformationoccurredafterWorldWarⅡwhenmanywomenbegantoworkfulltimeandspendlesstimeathomewiththeirfamilies.Women,however,wantedtofunctionwellinthecapacityofhomemaker,aswellasthatofcareerwomanbuttimebecameapreciouscommodity（商品）whichhadtobecarefullyused.
Therefore,itwasnecessarytomakeherlifeeasierathomeinthepreparationofthefamilydinner.Simultaneouslywithwomenenteringthejobmarkettherewasalsoashiftingofthefocusofhomeentertainmentfromtheradiotothetelevision.Televisionbecamethelatestfashioninthe1950sandnoonewantedtomisshisorherfavoriteprograms.Andthen,theplaceforsuppershiftedfromthediningroomtothelivingroom.
Asthecustomschanged,sodidtheculture.TheimmediatesolutionforthiswastheinventionoftheTVdinner.Thesewerefrozenmealswhichweredividedintoportionsofmeatandvegetable s.Theycouldeasilybeputintoanoven（锅）andpreparedwithinminutes.Thetintr ays（托盘）inwhichtheywereservedwereconvenientlycarriedintothelivingroomanddinnerwasconsumedinfrontofaTVset.Cleaningupafterwardswasnoproblem.Thetintr ayswereeasilythrownintothegarbage.
Fromfastd innersathomethenextstepwasquickeatingwhileontheroad.LoveforTVwascombinedwiththefascinationfortheautomobile.ItisnotoddthatwiththedevelopmentofthesuperhighwaysAmericasawthebeginningoffastfoodchains.McDonald'spavedthewaywithitsvarietyofburgersandcolddrinkssoontobefollowedbyallkindsofotherfoods.Todaydozensoffast-foodchainstorescanbefoundalonghighways,inmodernshoppingmallsandscatteredthroughoutneighborhoodsinAmerica.TacoBell,PizzaHut,RoyRoger's,BurgerKingandWendy'sarejustafewofthefast-foodchainswhicharenowpartofAmericanculture．Theyofferchicken,donuts,tacosandpizza,allquicklyproducedingreatquantitiesforthemasses.TheseestablishmentshavegivenshapetothemodernlifestylesanddietoftheAmericanpeople.
31．InAmerica,thewholefamilyseldomhavedinnertogetherathomebecause＿．
A．theyhavesomanysocialactivities
B．theyhavealotofmeetingstoattend
C．theyrushfromoneappointmenttoanother
D．theyoftenmovefromoneplacetoanother
正确答案：A
