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  3. 共用题干 The Bilingual Brain When Karl Kim immigrated to the United States from ...

共用题干 The Bilingual Brain When Karl Kim immigrated to the United States from ...

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问题 共用题干
The Bilingual Brain When Karl Kim immigrated to the United States from Korea as a teenager,he had a hard time learning English.Now he speaks it fluently,and he had a unique opportunity to see how our brains adapt to a second language.As a graduate student,Kim worked in the lab of Joy Hirsch,a neuroscientist in New York.______(46)They found evidence that children and adults don't use the same parts of the brain when they learn a second language. The researchers used an instrument called an MRI(magnetic resonance imaging)scanner to study the brains of two groups of bilingual people.______(47)The other consisted of people who,like Kim, learned their second language later in life.People from both groups were placed inside the MRI scanner.This allowed Kim and Hirsch to see which parts of the brain were getting more blood and were more active.They asked people from both groups to think about what they had done the day before,first in one language and then the other.They couldn't speak out loud because any movement would disrupt the scanning. Kim and Hirsch looked specifically at two language centers in the brain-Broca's area,which is believed to control speech production,and Wernicke's area,which is thought to process meaning.Kim and Hirsch found that both groups of people used the same part of Wernicke's area no matter what language they were speaking. ______(48) People who learned a second language as children used the same region in Broca's area for both their first and second languages.People who learned a second language later in life used a different part of Broca's area for their second language.______(49)Hirsch believes that when language is first being programmed in young children,their brains may mix the sounds and structures of all languages in the same area.Once that programming is complete,the processing of a new language must be taken over by a different part of the brain. A second possibility is simply that we may acquire languages differently as children than we do as adults.Hirsch thinks that mothers teach a baby to speak by using different methods involving touch'sound, and sight.______(50)
选项 ______(49)
A:But their use of Broca's area was different.
B:One group consisted of those who had learned a second language as children.
C:How does Hirsch explain this difference?
D:We use special parts of the brain for language learning.
E:And that is very different from learning a language in a high school or college class.
F:Their work led to an important discovery.
答案C
解析空格后的“found”与选项F中的“discovery”的意义相近，且空格后的句子是对F的进一步解释。
空格前一句表明要对两组使用双语的人员的大脑进行研究，空格后的句子“The other…”讲的是一组人员的情况。由此可推测出，空格处讲的应是另一组人员的情况，B项符合题意。
整段讲的是Kim和Hirsch对大脑的两个语言中心的分析，空格前讲的是他们对Wernicke's area的使用情况的研究发现，空格处应为被测试者使用Broca's area的情况。A项符合题意。
空格前两句表明了成人学习第二语言与儿童学习第二语言时对Broca's area的不同使用情况，后面的“Hirsch beheves…”是Hirsch对这一现象的解释，根据上下文语境可知，空格处应选择C项。
最后一段第一句指出，儿童和成人学习语言的方式不同，空格前的句子讲的是母亲怎样教儿童学习说话，可知空格处应说明这与成人学习语言的不同，E项与这一语境最符合。
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