AnewstudyfindsthatyoungfemalesinonegroupofAfricanchimps...
问题详情:AnewstudyfindsthatyoungfemalesinonegroupofAfricanchimps(黑猩猩)usesticksasdollsmorethantheirmalepeers(同龄)do,oftentreatingpiecesofwoodlikeamotherchimpcaringforababy.Inhumanculturesaroundthewo...