原文 The researchers suggest that capuchin monkeys，like humans，are guided by social emotions.In the wild，they are a co-operative，group living species.Such cooperation is likely to be stable only when each animal feels“is not being cheated.Feelings of righteous indignation，it seems，are not the preserve of people alone.Refusing a lesser reward completely makes these feelings abundantly clear to other members of the group.However，whether such s sense of fairness evolved independently in capuchins and humans，Or whether“stems from the common ancestor that the species had 35 million years ago，is，as yet，an unanswered question。

　　題目 Dr. Brosnan and Dr. de Waal have eventually found in their study that the monkeys

　　A.prefer grapes to cucumbers。

　　B.can be taught to exchange things。

　　C.will not be co-operative if feeling cheated。

　　D.are unhappy when separated from others。(2005--24)解答  原文的提示信息包括：1)the researchers 2)suggest。題干中的Dr. Brosnan和Dr. de Waal表明他們是researchers。原文說“研究人員說，猴子和人一樣，也是有社會情感的。在  野外，他們是非常合作的群居性動物。這種合作只有在每一個成員都感到不被欺騙時才會穩(wěn)定”。而問題是“兩個博士的研究比較終發(fā)現(xiàn)猴子_____”。C選項說“如果感到被騙就不會合作”，正是從另外一個角度敘述原文內(nèi)容。重現(xiàn)的關(guān)鍵詞匯是co-operative和feeling cheated。