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
Human’s Hands Archaeological records--paintings, drawings, and carvings of humans engaged in activities involving the use of
Human’s Hands Archaeological records--paintings, drawings, and carvings of humans engaged in activities involving the use of
admin
2010-02-20
60
问题
Human’s Hands
Archaeological records--paintings, drawings, and carvings of humans engaged in activities involving the use of hands--indicate that humans have been predominantly right - handed for more than 5,000 years. In ancient Egyptian artwork, for example, the fight-hand is depicted as the dominant one in about 90 per cent of the examples. Fracture or wear patterns on tools also indicate that a majority of ancient people were fight - handed.
Cro-Magnon cave paintings some 27,000 years old commonly show outlines of human hands made by placing one hand against the cave wall and applying paint with the other. Children today make similar out lines of their hands with crayons on paper. With few exceptions, left hands of Cro-Manganese are displayed on cave walls, indicating thai the paintings were usually done by right-handers.
Anthropological evidence pushes the record of handedness nearly human ancestors back to at least 1.4 million years ago. One important line of evidence comes from flaking patterns of stone cores used in tool making: implements flaked with a clockwise motion (indicating a right- handed toolmaker) can be distinguished frp, those flakea wan a counter- clockwise rotation (indicating a left -handed toolmaker).
Even scratches found on fossil human teeth offer clues. Ancient humans are thought to have cut meat into strips by holding it between their teeth and slicing it with stone knives, as do the present -day Inuit. Occasionally the knives slip and leave scratches on the users’ teeth. Scratches made with a left - to - right stroke direction (by right-handers) are more common than scratches in the opposite direction (made by left-handers).
Still other evidence comes from cranial morphology: scientists think that physical differences between the right and left sides of the interior of the skull indicate subtle physical differences between the two sides of the brain. The variation between the hemispheres corresponds to which side of the body is used to perform specific activities. Such studies, as well as studies of tool use, indicate that right - or left – sided dominance is not exclusive to modem Homo sapiens. Populations of Neanderthals, such as Homo erects and Ho mo habilis, seem to have been predominantly right -handed, as we are.
What is the main idea of the passage?
选项
A、Human ancestors became predominantly right- handed when they began to use tools.
B、It is difficult to interpret the significance of anthropological evidence concerning tool use,
C、Human and their ancestors have been predominantly right -handed for over a million years.
D、Human ancestors were more skilled at using both hands than modem humans.
答案
C
解析
从第三段的Anthropological evidence pushes the record of handedness nearly human ancestors back to at least 1.4 million years ago.和后面以工具制造为证据这一方面可说明,人类主要是采用右手,人类使用右手已经有一百多万年的历史,所以答案为C。
转载请注明原文地址:https://kaotiyun.com/show/lYvO777K
0
专业英语八级
相关试题推荐
Archaeologyasaprofessionfacestwomajorproblems.First,itisthepoorestofthepoor.Onlytriflingsumsareavailablefor
Thetimingofmarketentryiscriticaltothesuccessofanewproduct.Acompanyhastwoalternatives:itcancompetetoenter
TheWorldTradeOrganization(WTO)is【C1】______dealingwiththeglobalrulesoftradebetweennations.Ithasmorethan【C2】____
Americannolongerexpectpublicfigures,whetherinspeechorinwriting,tocommandtheEnglishlanguagewithskillandgift.
ThediscoveryoftheAntarcticnotonlyprovedoneofthemostinterestingofallgeographicaladventures,butcreatedwhatmigh
一个“解放”的女性就是一个自己控制生活,而不是让其他的人、传统或者要求控制的女性。一个“解放”的女性可能从事任何工作,包括做家务,或者什么也不做。她可能结婚也可能未婚;她可能有孩子也可能没有;她可能贫穷或者富有,受过教育或者是个文盲。不管是墙壁的颜色还是她
A、Jane’swritingisonlyaverage.B、Janemisspellstoomanywordsinheressay.C、Janeshouldn’timproveherspelling.D、Janeca
Becauseofsatellitelinkswhichnowenablebroadcastnewsorganizationstooriginateliveprogrammingfromanypartoftheglob
Thisviewmaybecorrect:ithastheadvantagethatthecurrentsaredrivenbytemperaturedifferencesthatthemselvesdependon
A、Manwillprobablybeabletolivetherein200years.B、Scientistsareratherpessimisticaboutit.C、Manwillprobablybeabl
随机试题
【B1】【B4】
关于影响红细胞沉降率的因素,正确的是
某个体企业主张金柱欲为其62岁的母亲图雅、8岁的女儿张玉以及在其企业工作的员工28岁的司机罗帆投保保意外伤害保险。为此,他向保险公司详细询问了有关意外伤害保险的具体条件,并与保险公司签订了三份人身保险合同。请回答下列相关问题。在张某为其母亲图雅投保的合
根据《水工混凝土施工规范》(DL/T5144—2001),浇筑仓面混凝土料出现下列()情况时,应予挖除。
某外贸公司为增值税一般纳税人,2018年11月从国外进口一批货物,海关核定的关税完税价格为180万元,进口关税税率为10%,增值税税率为13%。则该公司在进口环节应缴纳增值税为()万元。
下列属于会计异常现象的是()。
图1乐器的准确称谓是()。
文化变迁是指由于族群社会内部的发展或由于不同族群之间的接触而引起的一个族群文化的改变。由于发明或借用而增添新的事物,由此导致旧事物丧失,是一种文化变迁;由于生态环境及社会生活变化,在没有替代物的情况下有些文化因素自动消失,也属于文化变迁。根据上述定义,下
情景:民华中学初三(2)班的郑光明同学因患肺炎住院,耽误了很多功课,同班同学赵晓亮在郑光明出院后每天晚上去他家给他补课,整整坚持了一个月,直到为郑光明同学补上所有落下的功课。请你以郑光明的妈妈的名义给民华中学的校领导写一封表扬信,建议学校领导对赵晓亮同学给
Onemajorobstacletoeconomicdevelopmentispopulationgrowth.Thepopulationsofmostdevelopingcountriesgrewataratemuc
最新回复
(
0
)