首页
登录
职称英语
[originaltext] Approximately 90% of people in the world are naturally right-
[originaltext] Approximately 90% of people in the world are naturally right-
游客
2024-01-27
26
管理
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.[21]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. Whan 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 of 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 right hand.
B、The left hand.
C、Both hands.
D、It depends.
答案
B
解析
原文提到,婴儿16周大时,主垂使用左手进行触摸,因此B正确。
转载请注明原文地址:https://tihaiku.com/zcyy/3398514.html
相关试题推荐
[originaltext]ThanksgivingDayisthemosttrulyAmericanofthenationalHolid
[originaltext]ThanksgivingDayisthemosttrulyAmericanofthenationalHolid
[originaltext]ThanksgivingDayisthemosttrulyAmericanofthenationalHolid
[originaltext](19)AbigdifferencebetweenpublicandprivateinAmericanhighe
[originaltext]WhereverChinesego,thecustomofdrinkingteafollows.Teawas
[originaltext]WhereverChinesego,thecustomofdrinkingteafollows.Teawas
[originaltext]M:Hi,Annie.Doyouprefertotravelwithsomebodyortravelalo
[originaltext]W:Excuseme,I’vebeenusingthisoldbookforaresearchprojec
[originaltext]W:Excuseme,I’vebeenusingthisoldbookforaresearchprojec
[originaltext](5)Volkswageniscutting30,000jobsoverthenextthreeyearsas
随机试题
[originaltext]Inthe18thcenturyFrencheconomistsprotestedtheexcessive
CommunicateComplexIdeasSuccessfullyIntoday’slecture,
ConversationalSkills1.Skilltoaskquestionsa)B
市场是巨大的,企业面对的买主千差万别,不同的买主具有不同的欲望和需求,他们的购买
人体的造血原料主要是A.铁、维生素B和叶酸 B.蛋白质和铁 C.蛋白质、铁和
2019年一带一路向世界铺展合作共赢的新画卷,截止2019年11月,中国政府已与
生理性体重下降一般在什么时候恢复到出生体重()A.出生2~4天 B.出
A.四肢慢性损伤性疾病 B.周围血管疾病 C.神经痛 D.癌症疼痛 E.
2011年上半年,全国电信业务总量累计完成5681.1亿元,比上年同期增长15.
在乳牙滞留的临床表现中,哪项是错误的A.乳牙滞留可能单个发生,也可能多个同时发生
最新回复
(
0
)