[单项选择]Passage4
Questions16to20arebasedonthefollowingpassage.
Historicalperiodsaredominatedbydistinctsetsofideaswhichformthegeneralspiritofaperiodinhistory.Greekphilosophy,Christianity,Renaissancethought,theScientificRevolution,andtheEnlightenmentareexamplesofsetsofideasthatdominatedtheirhistoricalperiods.Thechangesfromoneperiodtothenextareusuallyrathergradual.;otherchanges—moreabrupt—areoftenreferredtoasrevolutions.Themostfar-reachingofalltheseintellectualchangeswastheDarwinianrevolution.TheworldviewformedbyanythinkingpersonintheWesternworldafter1859,whenOntheOriginofSpecieswaspublished,wasbynecessityquitedifferentfromaworldviewformedbefore1859.Itisalmostimpossibleforamodernpersontoprojectbacktotheearlyhalfofthenineteenthcenturyandreconstructthethinkingofthispre-Darwinianperiod,fortheimpactofDarwinismonourviewshasbeensogreat.
TheintellectualrevolutionbroughtaboutbyDarwinwentfarbeyondtherealmofbiology,causingtheoverthrowofsomeofthemostbasicbeliefsofhisage.Forexample,Darwinr A. a modest scholar B. a born thinker C. anoriginalscientist D. apracticaltheorist