题目

Scientists at Harvard University and Bates College find female chimpanzees (黑猩猩) appear to treat sticks as dolls, carrying them around until they have children of their own. Young males engage in such behavior much less frequently. The new work by Sonya M. Kahlenberg and Richard W. Wrangham, described this week in the journal Current Biology, provides the first evidence of a wild non­human species playing with dolls, as well as the first known sex difference in a wild animal’s choice of playthings. The two researchers say their work adds to a growing body of evidence that huma阅读下面《论语》选段，回答问题。孔子曰:益者三友，损者三友。友直，友谅，友多闻，益矣。友便辟，友善柔，友便侫，损矣。（《论语·季氏》）。根据上述文字，孔子认为，结交哪三种朋友是有害的？请用自己的话加以解释。