A. chiefly for changing the world B. just for challenging the status quo C. primarily for the benefits of humankind D. mainly for playing the game of science 参考答案:D 答案解析:[解析] 推理判断题。根据第一段最后一句,理论家的动机更多的是出于玩耍(Their motivational system most often is that of the Player),可推断出