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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. I

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. I

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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.
Female capuchin monkeys were chosen for the research most probably because they are_____.
选项 A、more inclined to weigh what they get
B、attentive to researchers’instructions
C、nice in both appearance and temperament
D、more generous than their male companions
答案A
解析 本题可参照文章的第2段。从中可知，研究人员研究了雌性棕色僧帽猴的行为；这些猴子看上去很聪明，它们是温和、协作性动物，乐意分享食物。最重要的是，如同人类女性一样，它们往往比雄性更注重“物品和服务”的价值。由此可知：雌性僧帽猴之所以被选来做这项研究，主要是因为它们注重“物品和服务”的价值。A项与文章的意思相符。因此A项为正确答案。
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