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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
【C2】
选项
答案I
解析 空前的has already been表明，本空应填一过去分词形式的动词，H)、I)和N)入选。由该句but后提到的“但是这是第一次发现鸟儿……”可知，在这一发现之前，猴子、老鼠及其他哺乳动物已被发现能够识别语言，因此所填词表达的应是证实之意，故答案为I)confirmed(证实)。
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