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
2023-06-26
84
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/2783931.html
相关试题推荐
[originaltext][16]TheRedCrossisaninternationalorganizationwhichcare
[originaltext]W:Hi,Fred.Whatareyoureading?M:Oh,thesearejustsomeboo
[originaltext]W:Hi,Fred.Whatareyoureading?M:Oh,thesearejustsomeboo
[originaltext]W:Hi,I’mnewhere,andIwaswondering[9]howIcouldgetalib
[originaltext]W:Hi,I’mnewhere,andIwaswondering[9]howIcouldgetalib
[originaltext]UniversityofHoustonassociateprofessorTempleNorthuphas
[originaltext]TheSouthKoreanbusinessmanwhofoundedtheDaewooIndustria
[originaltext]TheSouthKoreanbusinessmanwhofoundedtheDaewooIndustria
[originaltext][2]TheBritishprimeministerannouncedthattheU.S.andBr
[originaltext]Mensaidtheyspent13hoursaweekonhouseholddutyincludi
随机试题
Onedayalittleboycomesintoashopand【C1】______theshopassistant,“Iwa
HappinessandSadnessHappinessandsadnessaretwomost
CanthePCIndustryResurrectItself?A)InternetDataCenter
引起肝性脑病最多见的是()。A.酒精性肝硬化 B.淤血性肝硬化 C.原发
甲单位为中央级事业单位,其重点实验室一台大型仪器设备于2021年6月提前报废,该
下面哪组满足光的三基色()。A.红、绿、蓝 B.红、绿、黄 C.红、黄、蓝
女,28岁,计划妊娠2年不孕,痛经3年,进行性加重,GPAL。查体:T36.0℃
对昏迷患者的护理措施,下列哪项不妥A.密切观察患者生命体征,瞳孔变化 B.使患
某市交警大队违法扣押了某公司一加长汽车,在扣押期间该车发动机和车厢受到损坏。如要
基础的埋深是指()。A.从室外地面到基础底面的垂直距离 B.从室外设计地
最新回复
(
0
)