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  3. Everybody loves a fat pay rise.Yet pleasure at your own can vanish if you learn that a colleague has been given a bigger one.Ind

Everybody loves a fat pay rise.Yet pleasure at your own can vanish if you learn that a colleague has been given a bigger one.Ind

admin2015-05-29  40
问题     Everybody loves a fat pay rise.Yet pleasure at your own can vanish if you learn that a colleague has been given a bigger one.Indeed, if he has a reputation for slacking, you might even be outraged.Such behaviour is regarded as "all too human", with the underlying assumption that other animals would not be capable of this finely.But a study by Sarach Brosnan and Frans de Waal of Emory University in Atlanta, Georgia, which has just been published in Nature, suggests that it is all too monkey, as well.
    The researchers studied the behaviour of female brown capuchin monkeys.They look cute.They are good-natured, cooperative creatures, and they share their food readily.Above all, like their female human counterparts, they tend to pay much closer attention to the value of "goods and services" than males.
    Such characteristics make them perfect candidates for Dr.Brosnan’s and Dr.de Waal’s study.The researchers spent two years teaching their monkeys to exchange tokens for food.Normally, the monkeys were happy enough to exchange pieces of rock for slices of cucumber.However, when two monkeys were placed in separate but adjoining chambers, so that each could observe what the other was getting in return for its rock, their behaviour became markedly different.
    In the world of capuchins, grapes are luxury goods (are much preferable to cucumbers).So when one monkey was handed a grape in exchange for her token, the second was reluctant to hand hers over for a mere piece of cucumber.And if one received a grape without having to provide her token in exchange at all, the other either tossed her own token at the researcher or out of the chamber, or refused to accept the slice of cucumber.Indeed, the mere presence of a grape in the other chamber (without an actual monkey to eat it) was enough to induce resentment in a female capuchin.
    The researchers suggest that capuchin monkeys, like humans, are guided by social emotions.In the wild, they are a cooperative, group-living species.Such cooperation is likely to be stable only when each animal feels it 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 a sense of fairness evolved independently in capuchins and humans, or whether it stems for the common ancestor that the species had 35 million years ago, is, as yet, an unanswered question.
What can we infer from the last paragraph?
选项 A、Monkeys can be trained to develop social emotions.
B、Human indignation evolved from an uncertain source.
C、Animals usually show their feelings openly as humans do.
D、Cooperation among monkeys remains stable only in the wild.
答案B
解析 根据文章的最后一段可知，研究人员指出，僧帽猴与人类一样，也受社会性情感的支配。在野外，它们是协作、群居的物种。只有在每个动物都觉得它没有受到欺骗时，这种协作才有可能稳定。看起来，正当的愤怒感并非人类所特有的。完全拒绝较小的奖励使得群体的其他成员非常清楚这些情感。然而，这种公平意识究竟是僧帽猴和人类自身独立演化形成的，还是源于他们共同祖先，至今仍是一个有待回答的问题。据此可知，现在还不清楚人类和猴子的愤怒感源于什么因素。B项与文章的意思相符。因此B项为正确答案。
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