题目内容：
根据以下材料，回答题ForthefirstcenturyorsooftheIndustrialRevolution,increasedproductivityledtodecreasesinworkinghours.Agenerationagosocialplannersworriedaboutwhatpeoplewoulddowithallthis
new-foundfreetime.IntheUS,atleast,itseemstheyneednothavebothered.
Althoughtheoutputperhourofworkhasmorethandoubledsince1945,leisure(freetime)seemsreservedlargelyfortheunemployed.Thosewhoworkfull-timespendasmuchtimeonthejobastheydidattheendofWorldWarII.Infact,workinghourshaveincreasednoticeablysince 1970.
Thereareseveralreasonsforlostleisure.Since1979,companieshaverespondedtoimprovementsinthebusinessclimatebyhavingemployeesworkovertimeratherthanbyhiringextrapersonnel.
Mostincreasedproductiondoesn'trelatetotheemployment.Somefirmsareevendownsizingastheirprofitsclimb.It'smoreprofitabletoask40employeestolaboranextrahoureachthantohire
one
moreworkertodothesame40-hourjob.
Althoughemployeescomplainaboutlonghours,they,too,havereasonsnottotrademoneyforleisure.Peoplewhoworkreducedhourspayahugepriceincareerterms.It'stakenasanegative(负面的)signalabouttheircommitmenttothefirm.Manymanagersfinditdifficulttomeasurethecontributionoftheirstafftoafirm'swell-being,sotheyusethenumberofworkinghoursinsteadoftheoutputtoevaluatetheemployees.Wellawareofthis,employeesadjusttheirbehavioraccordingly.
Itmaytakesometimebeforeworkerscansuccessfullytradeincreasedproductivityandmoneyforleisuretime.TherealityisthattheU.S.marketforgoodshasfocusedonfulltime,two-careerhouseholds.Carmakersnolongerproducecheapmodels,anddevelopersdonotbuildthetinybungalowsthatservedthefirstpostwargenerationofhouseseekers.
Inaword,inU.S.,goodsareappropriateonlyforhighincomesandlonghours.
Whatwastheresultoftheindustrialrevolution? A．Lessworkingtime.
B．Moreunemployment.
C．Fewerfactories.
D．Morejobs.
参考答案：
答案解析：