V4黑猩猩的fruit soup. 问的是assumption： 我记得我没选JJ上的答案。 好像是类似这个（这题好像是变体，请各位谨慎选择）复习JJ的时候我网上搜了一下这个实验，发现下面的一句话，感觉特别好： In a series of four experiments, Mathias and Helena Osvath investigated whether chimpanzees and orangutans could override immediate drives in favor of future needs, and therefore demonstrate both self-control and the ability to plan ahead, rather than simply fulfill immediate needs through impulsive behavior. （提供此题的大牛考了750）注：本人选的C，黑猩猩使用工具是因为知道有更大的利益（吃的）（此题本人朋友表示问题变更了，大家小心） 牛奶题，就是SS和SA2种细菌的题。