请阅读短文。 Lookingbackonmychildhood,Iamconvincedthatnaturalistsarebornandnotmade.Althoughwewerebroughtupinthesameway,mybrothersandsisterssoonabandonedtheirpressedflowersandinsects.Unlikethem,Ihadnoearformusicandlanguages.IwasnotanearlyreaderandIcouldnotdomentalarithmetic. BeforeWorldWarIwespentoursummerholidaysinHungary.Ihaveonlythedimmemoryofthehousewelivedin,ofmyroomandmytoys.NordoIrecallclearlythelargefamilyofgrandparents,aunts,unclesandcousinswhogatherednextdoor.ButIdohaveacrystal-clearmemoryofdogs,thefarmanimals,thelocalbirdsandaboveall,theinsects. Iamanaturalist,notascientist.Ihaveastrongloveofthenaturalworld,andmyenthusiasmhasledmeintovariedinvestigations.Ilovediscussingmyfavoritetopicsandenjoyburningthemidnightoil,readingaboutotherpeople'sobservationsanddiscoveries.Thensomethinghappensthatbringstheseobservationstogetherinmyconsciousmind.Suddenlyyoufancyyouseetheanswertotheriddle,becauseitallseemstofittogether.Thishasresultedinmypublishing300papersandbooks,whichsomemighthonorwiththetitleofscientificresearch. Butcuriosity,akeeneye,agoodmemoryandenjoymentoftheanimalandplantworlddonotmakeascientist;oneoftheoutstandingandessentialqualitiesrequiredisself-discipline,aqualityIlack.Ascientistcanbemade.Anaturalistisborn.Ifyoucancombinethetwo,yougetthebestofbothworlds. Theauthorcan'trememberhisrelativesclearlybecause 查看材料
A.he didn't live very long with them
B.he was fully occupied with observing nature
C.the family was extremely larger
D.he was too young when he lived with them
正确答案是B