首页
财务会计
医药卫生
金融经济
考公考编
外语考试
学历提升
职称考试
建筑工程
IT考试
其他
登录
职称考试
Why Don’t Babies Talk Like Adults? Over the past half-century, scientists ha...
Why Don’t Babies Talk Like Adults? Over the past half-century, scientists ha...
admin
2020-12-24
21
问题
Why Don’t Babies Talk Like Adults?
Over the past half-century, scientists have settled on two reasonable theories related to babytalk. One states that a young chilcTs brain needs time to master language, in the same way that it does to master other abilities such as physical movement. The second theory states that a chilcTs vocabulary level is the key factor According to this theory, some key steps have to occur in a logical sequence before sentence formation occurs. Children^ mathematical knowledge develops in the same way.
In 2007,researchers at Harvard University, who were studying the two theories, found a clever way to test them. More than 20,000 internationally adopted children enter the U. S. each year. Many of them no longer hear their birth language after they arrive, and they must learn English more or less the same way infants do — that is,by listening and by trial and error. International adoptees don’t take classes or use a dictionary when they are learning their new tongue and most of them don’t have a well-developed first language. All of these factors make them an ideal population in which to test these competing hypotheses about how language is learned.
Neuroscientists Jesse Snedeker, Joy Geren and Carissa Shaft。studied the language development of 27 children adopted from China between the ages of two and five years. These children began learning English at an older age than US natives and had more mature brains with which to tackle the task. Even so, just as with American-born infants, their first English sentences consisted of single words and were largely bereft (缺乏的)of function words, word endings and verbs. The adoptees then went through the same stages as typical American_born children, though at a faster clip. The adoptees and native children started combining words in sentences when their vocabulary reached the same sizes, further suggesting that what matters is not how old you are or how mature your brain is, but the number of words you know.
This finding — that having more mature brains did not help the adoptees avoid the todd-ler-talk stage — suggests that babies speak in babytalk not because they have baby brains, but because they have only just started learning and need time to gain enough vocabulary to be able to expand their conversations. Before long, the one-word stage will give way to the two-word stage and so on. Learning how to chat like an adult is a gradual process.
But this potential answer also raises an even older and more difficult question. Adult immigrants who learn a second language rarely achieve the same proficiency in a foreign language as the average child raised as a native speaker. Researchers have long suspected there is a “critical period” for language development, after which it cannot proceed with full success to fluency. Yet we still do not understand this critical period or know why it ends.
What does the Harvard finding show?
选项
A Not all toddlers use babytalk.
B Language learning takes place in ordered steps.
C Some children need more conversation than others.
D Not all brains work in the same way.
答案
B
解析
文章第三段提到,虽然中国的孩子比美国的孩子学英语更晚些,但是他们和美国孩 子经历了同样的阶段,他们说出的第一个英语句子都是由单一的单词组成,缺少功能词、 词尾和动词。由此可见,语言学习按照一定的顺序发生,所以答案是B。
转载请注明原文地址:https://ti.zuoweng.com/ti/BbEQKKKQ
相关试题推荐
UsingHIVVirustoCureCancer Scientistsareplanningtousehumanimmunode...
UsingHIVVirustoCureCancer Scientistsareplanningtousehumanimmunode...
UsingHIVVirustoCureCancer Scientistsareplanningtousehumanimmunode...
UsingHIVVirustoCureCancer Scientistsareplanningtousehumanimmunode...
UsingHIVVirustoCureCancer Scientistsareplanningtousehumanimmunode...
Thosescientistsarestudyingonhowtoharnesstheenergyofthewind.()A.creat
CitizenScientists Understandinghownaturerespondstoclimatechangewill...
CitizenScientists Understandinghownaturerespondstoclimatechangewill...
共用题干 第三篇CitizenScientistsUnderstandinghownaturerespondstoclimatechang...
共用题干 第三篇CitizenScientistsUnderstandinghownaturerespondstoclimatechang...
随机试题
人工游泳池水中加入硫酸铜是为了 A.杀灭致病微生物 B.控制藻类生长 C.
反刍动物发生钼中毒后最早出现的特征性症状是 A.腹泻 B.共济失调 C.呼
中、短波广播发射机测试项目中三大电声指标包括:非线性失真、频率响应和()。
可用于静脉注射脂肪乳的乳化剂是
商业银行的贷款业务包括()。A.个人贷款业务B.票据业务C.保函业务D.公司贷款业务E.承诺业务
男性,40岁,患食管癌,食管明显梗阻,术前减轻患者食管黏膜水肿的措施是()。A.术前禁食B.营养支持C.纠正水、电解质和酸碱失衡D.加强口腔卫生
青年女性,体重60kg,双上肢及躯干Ⅱ度烧伤,该患者第1个24h需要补液的总量约为()。A.4000mlB.5000mlC.6000mlD.700
当前我国既处于发展的重要战略机遇期,又处于社会矛盾凸显期。要充分认识新形势下加强和创新社会管理的重大意义,统筹经济建设、政治建设、文化建设、社会建设以及生...
布洛芬的不良反应不包括A.恶心呕吐B.嗜睡C.皮疹、荨麻疹D.电解质紊乱E.造血障碍
下列选项中,建设工程监理投标文件的核心是()。A.监理实施细则B.监理大纲C.监理服务报价单D.监理规划