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  3. Bilingualism, of course, can be a leg up for college admission and a resume polisher. But a growing body of research now offers

Bilingualism, of course, can be a leg up for college admission and a resume polisher. But a growing body of research now offers

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问题     Bilingualism, of course, can be a leg up for college admission and a resume polisher. But a growing body of research now offers a further【C1】______: the regular, high-level use of more than one language may actually improve early brain development.
    According to several different studies, command of two or more languages strengthens the ability to focus【C2】______distraction, decide between competing alternatives, and disregard【C3】______information. These essential skills are【C4】______together, known in brain terms as "executive function. " The research suggests they develop ahead of time in bilingual children, and are already【C5】______in kids as young as 3 or 4. 【C6】______no one has yet identified the exact mechanism by which bilingualism boosts brain development, the【C7】______likely stems from the bilingual’s need to【C8】______select the right language for a given situation. According to Ellen Bialystok, a professor at York University in Toronto, this constant selecting process is strenuous exercise for the brain and involves processes【C9】______those required for monolingual speech, 【C10】______an extra store of mental sharpness, or, in Bialystok’s terms, a "cognitive【C11】______. "
    For parents whose toddlers can’t read Tolstoy in the【C12】______Russian, the research does offer some【C13】______: Tamar Gollan, a professor at University of California, San Diego, has found a vocabulary【C14】______between children who speak only one language and those who grow up with more. 【C15】______, the more languages spoken, the smaller the vocabulary in each one. The rule of【C16】______for improving in any language is【C17】______practice. "The more you use it, the better off you are," Gollan says. "Vocabulary tests, SATs, GREs—those are tests that【C18】______the absolute limits of your ability, and that’s where we find that bilinguals have the【C19】______, where you know the word but you just can’t get it out. " Gollan believes this deficit can be【C20】______with extra study. [309 words]
【C15】
选项 A、For instance
B、In addition
C、By contrast
D、On average
答案D
解析 本题考查句间逻辑语义。
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