- 阅读理解A
题干：Thedifferencesinlivingstandardsaroundtheworldarevast.In1993'theaverageAmericanhadanincomeofabout$25，000.Inthesameyear,theaverageMexicanearned$7，000，andtheaverageNigerianearned$1,500.Notsurprisingly,thislargevariationinaverageincomeisreflectedinvariousmeasuresofthequalityoflife.Changesinlivingstandardsovertimearealsolarge.IntheUnitedStates，incomeshavehistoricallygrownabout2percentperyear(afteradjustingforchangesinthecostofliving).Atthisrate,averageincomedoublesevery35years.Insomecountries,economicgrowthhasbeenevenmorerapid.InJapan,forinstance,averageincomehasdoubledinthepast20years,andinSouthKoreaithasdoubledinthepast10years.Whatexplainstheselargedifferencesinlivingstandardsamongcountriesandovertime?Theanswerissurprisinglysimple.Almostallvariationinlivingstandardsisattributabletodifferencesincountries’productivity-thatis,theamountofgoodsandservicesproducedfromeachhourofaworker’stime.Innationswhereworkerscanproducealargequantityofgoodsandservicesperunitoftime,mostpeopleenjoyahighstandardofliving；innationswhereworkersarelessproductive,mostpeoplemustendureamoremeagerexistence.Similarly,thegrowthrateofanation'sproductivitydeterminesthegrowthrateofitsaverageincome.Thefundamentalrelationshipbetweenproductivityandlivingstandardsissimple，butitsimplicationsarefar-reaching.Ifproductivityistheprimarydeterminantoflivingsstandards，otherexplanationsmustbeofsecondaryimportance.Forexample,peoplemightthinkthatlaborunionsorminimum-wagelawscontributedtotheriseinlivingstandardsofAmericanworkersoverthepastcentury.YettherealheroofAmericanworkersistheirrisingproductivity.Therelationshipbetweenproductivityandlivingstandardsalsohasgreatimplicationsforpublicpolicy.Whenthinkingabouthowanypolicywillaffectlivingstandards，thekeyquestionishowitwillaffectourabilitytoproducegoodsandservices.Toimprovelivingstandards，policymakersneedtoraiseproductivitybyensuringthatworkersarewelleducated，havethetoolsneededtoproducegoodsandservices,andhaveaccesstothebestavailabletechnology.
题目：Which of the following countries has enjoyed the fastest economic growth in history? - A 、Mexico.
- B 、The United States.
- C 、Japan.
- D 、South Korea.
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参考答案【正确答案：D】
推断题。答案在第一段。由末尾“At this rate, average income… in the past 10 years. ”可以知道美国的人均收人每35年翻了一番，日本的人均收入在过去20年翻了一番, 而韩国的人均收入在过去的10年翻了一番，第一段中只把墨西哥的人均收入和美国、尼日利亚做了对比，不能推出它的经济增长速度, 所以从以上的对比可以得知韩国的经济增长速度最快。
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