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  3. Pet birds can not only imitate sounds, they can distinguish between languages, potentially offering new【C1】______on how the brai

Pet birds can not only imitate sounds, they can distinguish between languages, potentially offering new【C1】______on how the brai

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问题     Pet birds can not only imitate sounds, they can distinguish between languages, potentially offering new【C1】______on how the brain recognises speech, Japanese researchers say. It has already been【C2】______that monkeys, mice and other mammals can recognise different languages but this is the first time that birds have been found to【C3】______the ability, The Mainichi Daily News reported.
    A research team【C4】______Java Sparrows to English and Chinese translations recorded by exchange students of two well-known Japanese novels, The Tale of Genji and Natsume Soseki’s I Am a Cat. A bird sitting on a perch first listened to the English【C5】______and was only allowed to eat afterwards. Then the researchers played English and Chinese recordings at random and only allowed the bird to eat after hopping onto the perch with the English. The birds correctly identified the English recording 75 percent of the time. The same results were achieved with another two birds that were【C6】______to eat only when Chinese was played. "Humans are able to distinguish between languages, even ones they don’t know, from the intonation and pronunciation, and it seems that paddy birds have the【C7】______ability," said Keio University experimental psychology professor Shigeru Watanabe, who led the research.
    Watanabe said paddy birds like the Java Sparrow and parakeets, which are【C8】______vocally, learn sounds unique to their species after becoming adults, suggesting that they have a【C9】______ability to distinguish between sounds. The researchers did not use Japanese because it was the language the birds【C10】______listened to, the newspaper said.
A)possess I)confirmed
B)normally J)skilled
C)same K)version
D)suggestions L)low
E)clues M)rarely
F)high N)permitted
G)process O)different
H)exposed
【C10】
选项
答案B
解析 分析空所在的句子结构可知，本句不缺主干成分，故本空应填一副词，B)normally和M)rarely入选。根据首段和第2段末句提到的该研究的领导者为Keio University(日本庆应大学)的教授可知，此项研究是在日本进行，所以日语是这些鸟儿日常生活中经常听到的语言，故答案为B)normally(通常)。
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