2. 考研
  3. When lab rats sleep, their brains revisit the maze they navigated during the day, according to a new study (1)_____ yesterday, o

When lab rats sleep, their brains revisit the maze they navigated during the day, according to a new study (1)_____ yesterday, o

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问题     When lab rats sleep, their brains revisit the maze they navigated during the day, according to a new study (1)_____ yesterday, offering some of the strongest evidence (2)_____ that animals do indeed dream. Experiments with sleeping rats found that cells in the animals’ brains fire in a distinctive pattern (3)_____ the pattern that occurs when they are (4)_____ and trying to learn their way around a maze.
    Based on the results, the researchers concluded the rats were dreaming about the maze, (5)_____ reviewing what they had learned while awake to (6)_____ the memories.
    Researchers have long known that animals go (7)_____ the same types of sleep phases that people do, including rapid-eye-movement (REM) sleep, which is when people dream. But (8)_____ the occasional twitching, growling or barking that any dog owner has (9)_____ in his or her sleeping pet, there’s been (10)_____ direct evidence that animals (11)_____. If animals dream, it suggests they might have more (12)_____ mental functions than had been (13)_____.
    "We have as humans felt that this (14)_____ of memory—our ability to recall sequences of experiences—was something that was (15)_____ human", Wilson said. "The fact that we see this in rodents (16)_____ suggest they can evaluate their experience in a significant way. Animals may be (17)_____ about more than we had previously considered".
    The findings also provide new support for a leading theory for (18)_____ humans sleep—to solidify new learning. "People are now really nailing down the fact that the brain during sleep is (19)_____ its activity at least for the time immediately before sleep and almost undoubtedly using that review to (20)_____ or integrate those memories into more usable forms", said an assistant professor of psychiatry at Harvard Medical School.
选项 A、related
B、retained
C、released
D、relieved
答案C
解析 released发表，发行。The new motion picture was released yesterday．昨天发行了一部新的影片。related叙述，使联系；retained保持，保留；relieved减轻，解除。句意：实验鼠睡眠时，其大脑重现了它白天走过的迷宫。昨天发表的一项新的研究报告如是说。这为动物确实会做梦提供了迄今为止最有力的证据。
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