一道完形试题,对答案十分不理解,Theworldoftheour-of-doorsisfullofsecrets.Therearesomanysecrets,andtheyaresointerestinghatthousandsofmenandwomen,boysandgirlsarebusystudyingthem.Allaroundusarebirds,animals,tr

　　一道完形试题,对答案十分不理解,

　　Theworldoftheour-of-doorsisfullofsecrets.Therearesomanysecrets,andtheyaresointerestinghatthousandsofmenandwomen,boysandgirlsarebusystudyingthem.Allaroundusarebirds,animals,treesandflowers.Thefactabouthowtheyliveandgrowareinterestingas___couldbe.

　　.

　　A.nothingB.somethingC.anythingD.everything

　　答案是C但我觉得是A——没有什么可以和它一样有趣,不是nothing吗?