Inanycountry,the"standardofliving"meanstheaverageperson′sshareof

Inanycountry,the"standardofliving"meanstheaverageperson′sshareofthegoodsandserviceswhichthecountryproduces.Therefore,acountry′sstandardoflivingdependsfirstandforemostonitscapacitytoproducewealth."Wealth"inthissenseisnotmoney,but"goods"suchasfoodandclothing,and"services"suchastransportandentertainment. Thecapacitytoproducewealthdependsuponmanyfactors,mostofwhichhaveaneffectononeanother.Toagreatextent,wealthdependsuponacountry′snaturalresources,suchascoal,gold,andotherminerals,watersupplyandsoon.Someregionsoftheworldarewellsuppliedwithcoalandminerals,andsomearenot. Nexttonaturalresourcescomestheabilitytoturnthemtouse.Somecountriesareperhapswelloffinnaturalresources,butunabletodeveloptheirresources.Theysufferedformanyyearsfromcivilandexternalwars.Peacefulpoliticalandstableconditionsenableacountrytodevelopitsnaturalresourceseffectively,andtoproducemorewealththananothercountryequallywellservedbynaturebutlesswellordered.Anotherimportantfactoristhetechnicalefficiencyofacountry′speople.Industrializedcountriesthathavetrainednumerousskilledworkersandtechniciansproducewealthmorethancountrieswhoseworkersarelargelyunskilled. Acountry′sstandardoflivingdoesnotonlydependuponthewealththatisproducedandconsumedwithinitsownborders,butalsouponwhatisindirectlyproducedthroughinternationaltrade. Forinstance,Britain′swealthisfoodstuffsandotheragriculturalproductswouldbemuchlessifshehadtodependonlyonthosegrownathome.Trademakesitpossibleforhersurplusmanufacturegoodstobetradedabroadfortheagriculturalproducts.Inthisaspect,acountry′swealthismuchinfluencedbyitsmanufacturingcapacity,providedthatothercountriescanbefoundreadytoacceptitsmanufactures. Accordingtothepassage,besidesthecapacityofwealthproduction,______playanequallyimportantroleindeterminingacountry′sstandardofliving.

A.farm products

B.industrial goods

C.foodstuffs

D.export and import

正确答案是D