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
53
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
Thinkgolfis【C1】______game?Thinkagain.ResearchersincludingDebbieCrewsofArizonaStateUniversityandJohnMiltonofthe
WoodrowWilsonwasreferringtotheliberalideaoftheeconomicmarketwhenhesaidthatthefreeenterprisesystemisthemost
A、Theteacherpostponedtheconference.B、Thestudentswillbeattendingtheconference.C、Therewon’tbeatestthisafternoon.
Americanstodaydon’tplaceaveryhighvalueonintellect.Ourheroesareathletes,entertainers,andentrepreneurs,notschola
A、TheExpo86heldinCanadawasagreatsuccess.B、TheExpo86heldinSwitzerlandattractedpeoplefromallovertheworld.C、
A、Collegesacceptmorestudentsthantheyhaveroomfor.B、Manystudentsareacceptedtomorethanoncollege.C、Eachyearthen
Ifyouintendusinghumorinyourtalktomakepeoplesmile,youmustknowhowtoidentifysharedexperiencesandproblems.Your
A、Ourassignmentcanhardlybecompletedwithoutacomputerofmyown.B、Thestatisticsinthestudentcenteraremessedup,thu
A、Theeffectoftheatmosphereonrainfall.B、HowconditionsonEarthsupportlife.C、HowwateroriginatedonEarth.D、Anewest
A、TheywereprotectedbyastrongUSNavy.B、Theyweresupportedbyawell-developedrailroad.C、Mostcrewmembershadexperienc
随机试题
国产天然气氨压缩浅冷装置ZDl2压缩机启机后,应打开火炬放空阀。
植物所把空气中游离氮固定,转化为含氮化合物的过程,称为生物固氮。
简述Y理论的观点。
A.四逆散B.逍遥散C.大柴胡汤D.葛根芩连汤E.小柴胡汤
在外周免疫器官中T细胞定居在
总需求函数是指总需求水平和产量水平之间的关系。
有一种观点是“良剑期乎断,不期乎镆铘;良马期乎千里,不期乎骥骜”,另一种观点是“实至才能名归。名望和声誉才是最重要的”。你赞同哪一种观点?
A、The10a.mflight.B、The2p.m.flight.C、The10p.m.flight.D、Theearlierflight.BWhichflightdoesthemanprefer?
MostvolcanoesarequietTheyrestpeacefullyforhundredsofyears.Noonepaysmuchattentiontothem.MountSt.Helenswasone
Directions:Forthispart,youareallowed30minutestowriteashortessayonhowtobesthandletherelationshipbetweenpare
最新回复
(
0
)