Theauthorintendstosayinthelastparagraphthat______.

单项选择题

Passage4 Questions16to20arebasedonthefollowingpassage. Historicalperiodsaredominatedbydistinctsetsofideaswhichformthegeneralspiritofaperiodinhistory.Greekphilosophy,Christianity,Renaissancethought,theScientificRevolution,andtheEnlightenmentareexamplesofsetsofideasthatdominatedtheirhistoricalperiods.Thechangesfromoneperiodtothenextareusuallyrathergradual.;otherchanges—moreabrupt—areoftenreferredtoasrevolutions.Themostfar-reachingofalltheseintellectualchangeswastheDarwinianrevolution.TheworldviewformedbyanythinkingpersonintheWesternworldafter1859,whenOntheOriginofSpecieswaspublished,wasbynecessityquitedifferentfromaworldviewformedbefore1859.Itisalmostimpossibleforamodernpersontoprojectbacktotheearlyhalfofthenineteenthcenturyandreconstructthethinkingofthispre-Darwinianperiod,fortheimpactofDarwinismonourviewshasbeensogreat. TheintellectualrevolutionbroughtaboutbyDarwinwentfarbeyondtherealmofbiology,causingtheoverthrowofsomeofthemostbasicbeliefsofhisage.Forexample,Darwinrejectedthebeliefintheindividualcreationofeachspecies,establishinginitsplacetheconceptthatalloflifedescendedfromacommonancestor.Byextension,heintroducedtheideathathumanswerenotthespecialproductsofcreationbutevolvedaccordingtoprinciplesthatoperateeverywhereelseinthelivingworld.Darwinupsetcurrentnotionsofaperfectlydesignednaturalandgentleworldandsubstitutedintheirplacetheconceptofastruggleforsurvival.VictoriannotionsofprogressandperfectibilitywereseriouslyweakenedbyDarwin’sdemonstrationthatevolutionbringsaboutchangeandadaptation,butitdoesnotnecessarilyleadtoprogress,anditneverleadstoperfection. Darwinwouldberememberedasanoutstandingscientistevenifhehadneverwrittenawordaboutevolution.Indeed,somepeoplebelievethatDarwin’smostoriginalcontributiontobiologywasnotthetheoryofevolutionbuthisseriesofbooksonexperimentalbotanypublishedneartheendofhislife.Thisachievementislittleknownamongnon-biologists,andthesameistrueforhisequallyoutstandingworkontheadaptationofflowersandonanimalpsychology,aswellashisimaginativeworkonearthworms.Darwinalsoattackedimportantproblemswithextraordinaryoriginality,therebybecomingthefounderofseveralnowwell-recognizedseparatedisciplines.Darwinwasthefirstpersontoworkoutasoundtheoryofclassification,whichisstillusedbymostexpertstoday.

A．Darwin did outstanding work apart from his theory of evolution
B．non-biologists know very little about Darwin’s theory of evolution
C．scholars failed to recognize Darwin’s contributions for a long time
D．Darwin’s most outstanding contribution is his theory of classification