想必大家在备考gre考试的时候，最喜欢的就是吸取新鲜的考试真题，这样对自己的能力也是一个考验，最能检验自己目前的能力在什么水平，今天小编为大家带来的就是GRE阅读高频机经原文及答案：雄性动物养孩子!
GRE阅读高频机经原文及答案：雄性动物养孩子
雄性动物养孩子
The main exception to primate researchers’ general pattern of ignoring interactions between males and infants has been the study of male care among monogamous primates. It has been known for over 200 years, ever since a zoologist-illustrator named George Edwards decided to watch the behavior of pet marmosets in a London garden, that among certain species of New World monkeys males contributed direct care for infants that equaled or exceeded that given by females. Mothers among marmosets and tamarins typically give birth to twins, as often as twice a year, and to ease the female in her staggering reproductive burden the male carries the infant at all times except when the mother is actually suckling it. It was assumed by Kleiman that monogamy and male confidence of paternity were essential to the evolution of such care, and at the same time, it was assumed by Symons and others that monogamy among primates must be fairly rare.
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