首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、The younger they are, the less they use both of their hands. B、They become one-handed and start using both hands alternately.
A、The younger they are, the less they use both of their hands. B、They become one-handed and start using both hands alternately.
admin
2016-12-22
21
问题
Approximately 90% of people in the world are naturally right-handed. Why is this so, and are we born one way or the other? The answer to this question is rather complicated.
In babies and young children, no single side becomes dominant until around the age of eight. At 12 weeks, babies usually use both hands equally, but by 16 weeks, they mostly use the left hand for touching. By 24 weeks, they have changed again and start using both hands. Then at 28 weeks, they become one-handed again, although this time it is the right hand that is used more. At 32 weeks, they start using both hands again. When they reach the age of 36 weeks, there is another change, with most babies now preferring to use the left hand. Between 40 and 44 weeks, the right hand is once again more used. At 48 weeks, babies switch to using their left hands again, and then between 52 and 56 weeks, the right hand takes over.
There are further changes still. At 80 weeks, the right hand loses control, and both are used again equally. When the young child reaches the age of two, the right hand takes over again, but between two and a half and three years, both hands are used equally. Things finally become stable at around four years and stay the same until, by the age of eight, one hand is strongly dominant over the other.
19. Which hand do babies use most for touching when they are at 16 weeks?
20. Until how old will a child’s one hand be strongly dominant over the other?
21. What do we learn about babies’ using their hands?
选项
A、The younger they are, the less they use both of their hands.
B、They become one-handed and start using both hands alternately.
C、One of their hands develops more skillfully as they age.
D、Most children in the world are born right-handed.
答案
B
解析
选项都是概括性的陈述,可以猜测本题需要综合全文的大意来解答。原文用很长的一段话来叙述婴儿几周大的时候用双手,几周大的时候更常用单手(左手或者右手),可知婴儿在8岁以前是交替使用单、双手的,故B正确。
转载请注明原文地址:https://jikaoti.com/ti/URpFFFFM
0
大学英语四级
相关试题推荐
在中国,书法(calligraphy)在传统艺术领域占据了一个独特的位置。它不仅是一种沟通的方式,而且是一个人在审美方面表达内心世界的渠道。古代人非常重视书法。这是很重要的能力,考生可以凭借它在科举考试(ImperialExamination)中展现出自
ChildrenAreWhattheMothersAre1.阐明此谚语的含义2.说明产生此现象的原因3.该谚语给予的启示
Today,studentswhowanttolearnEnglishintheUShaveawidechoiceofcoursesandinstitutionsto【B1】______from.And,becaus
Today,studentswhowanttolearnEnglishintheUShaveawidechoiceofcoursesandinstitutionsto【B1】______from.And,becaus
A、Hewillpostponethetrip.B、Hewillmarrythewoman.C、Hewillcookdinnerforthewoman.D、Hewilltaketennislessons.D细节题
InthesecondjourneytotheEastIhadnotcomewithoutsomeprecautions.Ihadasecretinterviewwithoneofourbestmedicin
A、GiveBobaphonecall.B、GoandpickBobup.C、GoandlookforBob.D、WaitforBob.D推理题。女士推测Bob可能遇上交通堵塞,建议再给他几分钟。因此,他们会等Bob。对
FixingaWorldThatFostersObesityA)WhyareAmericansgettingfatterandfatter?Thesimpleexplanationisthatweeattoomuc
A、Policemanandpolicewoman.B、Busdriverandpassenger.C、Policemanandwitness.D、Policemanandvictim.C旅行交通类,身份关系题。男士问女士看到车祸
A、Laughoften.B、Followthetraditions.C、Forgettheresult.D、Keepgoing.D校园生活类,请求建议题。女士说尽管她为准备这次考试做了很多功课,但还是没有通过;男士说没关系,因为笑到最
随机试题
我们通常所说的颜色“淡了”、“浅了”,是指什么的高低()
桥梁质量检验评定的基本单元是()。
以下属于房屋买卖合同的主要内容的是()。
建设项目在利用吸收直接投资方式筹集资本金时,出资人可以用()。
对于托收承付,验货付款的承付期为()。
布告法经常用于()的招聘。
我国奴隶社会的教育内容是()。
在某国选举前的民意测试中,民意排名前三的候选人甲、乙、丙三人分别归属民主党、共和党与工党三个党派,现已知:(1)民主党候选人排名在共和党候选人之前。(2)工党候选人的排名在丙之前。(3)工党候选人的排名在乙之后。如果上述条件都为真,那么以下哪项一定
美国新生儿人数曾多年呈上升态势,2007年达到顶峰,超过430万。但此后,这一数字开始减少。据美国疾病预防与控制中心2011年发布的初步统计数据显示,去年美国新生儿人数下跌3%,多于400万。美国新生儿人数连续第三年明显下跌,相关专家称新生儿人数下降原因可
甲医院为乙的直肠癌作切除手术,因重大过失遗留一块纱布于乙的体内。经查,手术前乙同意甲医院的规定:“对于任何事故,医院概不负责。”试问:(1)乙对甲有无损害赔偿请求权?(2)如有,应为何种请求权?为什么?
最新回复
(
0
)