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
2023-06-27
75
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/2788299.html
相关试题推荐
Peoplebecomequiteillogicalwhentheytrytodecidewhatcanbeeatenand
Peoplebecomequiteillogicalwhentheytrytodecidewhatcanbeeatenand
Peoplebecomequiteillogicalwhentheytrytodecidewhatcanbeeatenand
Howdidtheearlypeopledotheircounting?Atfirst,theydidalltheircou
Howdidtheearlypeopledotheircounting?Atfirst,theydidalltheircou
Howdidtheearlypeopledotheircounting?Atfirst,theydidalltheircou
FormanypeopleintheU.S.,sportsarenotjustforfun.Theyarealmosta
FormanypeopleintheU.S.,sportsarenotjustforfun.Theyarealmosta
FormanypeopleintheU.S.,sportsarenotjustforfun.Theyarealmosta
FormanypeopleintheU.S.,sportsarenotjustforfun.Theyarealmosta
随机试题
[originaltext]M:Aren’tyouevenalittlebitdisappointedthatyoudidn’tget
Wesubstitutefish______meatseveraltimesaweek.A、forB、toC、withD、andA本题考
装配图阅读通常由()阶段组成。A.初步了解 B.分析零件的形体结构和作用
与八进制数1706等值的十六进制数是()。A.3C6 B.8C6 C
A.破伤风 B.狂犬病 C.流感 D.伤寒 E.麻疹可以经土壤传播的疾病
A.寒邪B.风邪C.暑邪D.湿邪E.火邪六淫中致病具有明显季节性的邪气是
肾损伤的手术指征不包括A.合并肠破裂 B.肾蒂损伤 C.肾挫伤 D.开放性
2017年,70个大中城市新建商品住宅销售价格月环比同步下降的城市个数逐步增加。
中小企业板上市公司最近一个会计年度被注册会计师出具保留意见的审计报告,或者被出具
对定期考核不合格的医师,县级以上人民政府卫生行政部门可以A.吊销其医师执业证书
最新回复
(
0
)