2. 考研
  3. in exchange capable of pay much closer attention teaching their monkeys A. one monkey was handed a grape【T13】______ for her t

in exchange capable of pay much closer attention teaching their monkeys A. one monkey was handed a grape【T13】______ for her t

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问题 in exchange
capable of
pay much closer attention
teaching their monkeys
A. one monkey was handed a grape【T13】______ for her token
B. other animals would not be【T14】______ this finely
C. they tend to【T15】______ to the value
D. spent two years【T16】______ to exchange tokens for food
    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【T17】______. 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,【T18】______ of "goods and services" than males.
    Such characteristics make them perfect candidates for Dr. Brosnan’s and Dr. de Waal’s study. The researchers【T19】______ . 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【T20】______, 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.
【T19】
选项 A、 
B、 
C、 
D、 
答案D
解析 空格前一句的意思为：这些特征使得它们成为Brosnan博士和de Waal博士理想的研究对象。空格后一句的意思为：通常，猴子们非常愿意用石块换取黄瓜片。空格所在句的意思为：两位研究人员花了两年时间教他们研究的猴子用代币来换取食物。所以，D项符合题意。
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