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
2024-02-01
4
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. 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 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,主要使用左手进行触摸,因此B正确。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3413626.html
相关试题推荐
Accomplishedteachersofworldlanguagesarekeenlyawarethatyoungpeople
Accomplishedteachersofworldlanguagesarekeenlyawarethatyoungpeople
Accomplishedteachersofworldlanguagesarekeenlyawarethatyoungpeople
[originaltext]Anewstudyhasfoundevidenceofaggressivebehaviorinchil
[originaltext]Anewstudyhasfoundevidenceofaggressivebehaviorinchil
[originaltext]Anewstudyhasfoundevidenceofaggressivebehaviorinchil
[originaltext]Inthepast,youngpeopleinAmericausuallylivedwiththeir
[originaltext]Today,millionsofpeoplerunintheUnitedStates.Manymore
[originaltext]Today,millionsofpeoplerunintheUnitedStates.Manymore
[originaltext]Today,millionsofpeoplerunintheUnitedStates.Manymore
随机试题
Thereare【B1】______waysyoucanfindoutaboutthecountriesandplacesyou
Theveryfirsttopicofourdiscussionis"whatisart?"Mytalktodaywill
ThefifthlargestcityintheUSpassedasignificantsodataxproposalthat
根据《建筑工程施工图设计文件审查暂行办法》,()应当将施工图报送建设行政主管部
5.某公路隧道穿越两条断层地带,围岩级别为Ⅱ~Ⅲ级,地下水不发育,偶有点滴水渗漏
女方生殖器官不孕病因的检查中,下列最有诊断价值的项目是A.超声检查 B.内分泌
关于慢性肾炎的叙述,不正确的是( )。A.以青中年为主,男性多见 B.多由急
境内单位或者个人从事境外期货交易的办法的制定需要报()批准后实施。A.国务院
安装取源部件的开孔和焊接必须在工艺管道的()前进行。A.压力试验 B.预
确诊疟疾的实验室检查方法中,临床上最简便的是() A.血或骨髓涂片检查疟原虫
最新回复
(
0
)