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
47
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.
Snedeker, Geren and Shafto based their study on children who_
选项
A were finding it difficult to learn English
B had come from a number of language backgrounds
C were learning English at a later age than US children
D had taken English lessons in China
答案
C
解析
第三段提到 “These children began learning English at an older age than US natives and had more mature brains with which to tackle the task”,说明这些孩子比美国本土的孩子学 英语要晚^^旦有着更成熟的处理问题的头脑,所以答案是C。
转载请注明原文地址:https://ti.zuoweng.com/ti/ehEQKKKQ
相关试题推荐
Newbornbabiescandiscriminatebetweenaman’sandawoman’svoice.A.treatB.
UsingHIVVirustoCureCancer Scientistsareplanningtousehumanimmunode...
UsingHIVVirustoCureCancer Scientistsareplanningtousehumanimmunode...
Thosescientistsarestudyingonhowtoharnesstheenergyofthewind.()A.creat
CitizenScientists Understandinghownaturerespondstoclimatechangewill...
CitizenScientists Understandinghownaturerespondstoclimatechangewill...
CitizenScientists Understandinghownaturerespondstoclimatechangewill...
CitizenScientists Understandinghownaturerespondstoclimatechangewill...
IntelligentMachines 1Medicalscientistsarealreadyputtingcomputerchips...
共用题干 第一篇TheMysteryofClonesScientistshaveclonedgoats,cats,cows,pigsand...
随机试题
禁食24小时后,提供人体生命活动所需能量最主要的是 A.肝糖原 B.肌糖原
以下关于失语症正确的病变部位是()。 A.Broca失语在优势半球额下回后部
自我控制菌斑的方法中,不能有效去除菌斑的方法是 A、刷牙 B、漱口 C
出卖人因违反合同不能按时提供货品,导致双倍返还定金,这是供应商承担的(
《红楼梦》中林黛玉多愁善感,孤僻内向。其气质属于( )
哮病的病变脏腑是
女性,25岁。发现左颈外侧一无痛性肿块,约2.5cm*2.0cm*1.5cm大小
2006年5月单项选择题 在进行WAIS-RC的领悟测验时,如果()项中任何
下列关于著名科学家的描述,错误的一项是:()A.法国著名女科学家玛丽·居里是历史上第一个两次获诺贝尔物理学奖的人,她的最主要成就是发现了放射性元素镭和钋B
热固化型基托树脂的发热固化反应温度范围为A.68~74℃B.80~86℃C.56~64℃D.40~45℃E.50~56℃