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  3. A group of sperm whales appear to have taken in a deformed bottlenose dolphin, marine researchers have discovered. Behaviora

A group of sperm whales appear to have taken in a deformed bottlenose dolphin, marine researchers have discovered. Behaviora

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问题     A group of sperm whales appear to have taken in a deformed bottlenose dolphin, marine researchers have discovered.
    Behavioral ecologists Alexander Wilson and Jens Krause【B1】_____the heartwarming scene some 15 to 20 kilometers off the Azores in the North Atlantic, as they observed the dolphin six times while it nuzzled and【B2】_____members of the group, reports the journal Science.
    "It really looked like they had accepted the dolphin for whatever reason. They were being very【B3】_____." Wilson told the journal.
    The dolphin’s unfortunate deformity—a spinal disfigurement, likely a birth【B4】_____, which gives its back half an "S" shape—could help explain how it’s come to be taken in by the sperm whale group, explains Science.
    "Sometimes some individuals can be【B5】_____. It might be that this individual didn’t fit in, so to speak, with its original group," Wilson says,【B6】_____that the deformity could have put the animal at a disadvantage among its own kind—perhaps it had a low social status, or just couldn’t keep up with the other dolphins.
    Sperm whales swim more slowly than dolphins, notes the journal, and the pod designates(指派)one member to "babysit" the calves near the【B7】_____while the other adults dive deep.
    In fact, sperm whales have good reasons not to like the deformed bottlenose dolphin. "Why would sperm whales accept this animal in their group?" cetacean ecologist Monica Almeida e Silva said. "It’s really【B8】_____to me."
    But maybe we shouldn’t draw too much from this【B9】_____display of affection, because the briefness of the observation, and its rarity, as well as how little is known about these particular whales, makes it hard to【B10】_____.
【B4】
选项
答案defect
解析 根据空格前的a birth可知，空格处应填入名词(词组)的单数形式。结合录音可填入defect，意为“缺陷”。
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