TheeconomyoftheUnitedstatesafter1952wastheeconnomyofawell-fed,almostfullyemployedpeople.Despitoccasionalalarms,thecountryescapedanypostwardepressionandlivedinastateofboom.Aneconomicsurveyoftheyear1955,atypicalyearofthe1950’s,maybetypicalasillustratingtherapideconomicgrowthofthedecade.Thenationaloutputwasvalueat10percentabovethatof1954(1955outputwasestimatedat392billiondollars).Theproductionofmanufacturerswasabout40percentmorethanithadaveragedintheyearsimmediatelyfollowingWorldWar2.Thecountry’sbusinessspentabout30billiondollarsfornewfactoriesandmachinery.Nationalincomeavailableforspendingwasalmostathirdgreaterthanithadbeenithadbeenin1950.Consumersspentabout256billiondollars;thatisabout700milliondollarsaday,orabouttwenty-fivemilliondollarseveryhour,allroundtheclock.Sixty-fivemillionpeopleheldjobsandonlyalittlemorethantwomillionwantedjobsbutcouldnotfindthem.Onlyagriculturecomplainedthatitwasnotsharingintheroom.Tosomeobserversthiswasanominousechoofthemid-1920’s.Asfarmer’sshreoftheirproductsdeclined,marketingcostsrose.Buttherewere,amongtheobserversofthenationaleconomy,afewwhowerenotasconfidentasthemajority.Thosefewseemedtofearthattheboomcouldnotlastandwouldeventuallyleadtotheoppsite-depression. InLine3,theword“boom”couldbestbereplacedby_____. a.nearbyexplosionb.thunderousnoise c.generalpublicsupportd.rapideconomicgrowth
A.A B.B C.C D.D正确答案D