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
No Creatures can stride as human beings. They are not physically designed to support and balance a vertical body balanced on two
No Creatures can stride as human beings. They are not physically designed to support and balance a vertical body balanced on two
admin
2019-03-27
63
问题
No Creatures can stride as human beings. They are not physically designed to support and balance a vertical body balanced on two long lower limbs, propelled forward by a foot engineered exclusively for body support and forward propulsion and to do so with a stride at high-speed locomotion. While other bipeds walk in a similar fashion, human walk is unique. Bipedalism by itself offers no comparison with the distinctive human gait form. And, significantly, no other biped can actually cover more than a tiny fraction of the walking distance that can be sustained by humans.
Striding requires a special design of hip, knee, and ankle joints, plus an arched foot, plus long lower-limb bones. These "finishing touches" demanded extended evolutionary time. Striding provided numerous advantages over the simple stepping gait. For example, the ability to cover twice the distance with the same number of steps is a definite survival advantage. It also added much speed to running, more height to jumping.
None of this would have been possible without, first, a foot equipped to support and balance an erect body and to produce the leverage necessary to propel the body forward in locomotion. The ape foot was not suited for this. A new kind of foot was essential if those hominids were to become full-scale bipeds. Indeed a pair of human feet has one-fourth of all the body’s 206 bones and 244 joints. Why this extraordinary number of bones and joints concentrated in such a small part of the body?(74)
Because the intricate network of the many different parts required not only for supporting and balancing a heavy superstructure but to enable the multiple motions and actions, hundreds or thousands of times daily
. No other part of the body comes even close to the amount and degree of stresses imposed on it.
The human foot had to go through an extensive evolutionary development in which it underwent enormous design changes in cohering its 28 bones, 37 joints and 107 ligaments, and 32 muscles and tendons to adapt to the body weight and numerous torsions.(75)
In fact, it probably wasn’t until only about 400, 000 years ago that early humans were fully striding, the final touch of human gait.
Orthopedist Philip J. Mayer writes in the Orthopedic Review: "The development of a true stride on an orthopedic foot was the most crucial of all the steps of human evolution. " Nature had perhaps never undertaken an anatomical engineering project of such complexity.
What is the difference between humans and other bipeds regarding walking distance?
选项
答案
No other biped can actually cover more than a tiny fraction of the walking distance that can besustained by humans.
解析
(根据文章第一段内容可知不是所有的两足动物都能像人一样。答案为最后一句。)
转载请注明原文地址:https://kaotiyun.com/show/svNK777K
本试题收录于:
C类竞赛(非英语专业本科)题库大学生英语竞赛(NECCS)分类
0
C类竞赛(非英语专业本科)
大学生英语竞赛(NECCS)
相关试题推荐
WaterforLifeWaterisessentialforlife.Yetmanymillionsofpeoplearoundtheworldfaceawater【C1】______(short).Man
Accordingtoexperts,companionshipandsocialsupportarevitaltobothourpsychologicalandphysicalwell-being—onereason,p
Bicyclesharinghasbeenahotlydebatedtopicoverthepasttwoyears.BicyclesarenothingexotictoChinesepeople.Inthe19
Afewyearsago,peopleinEnglandvotedforthegreatestpersonofalltimefromtheircountry.Theywerenotjustvotingfort
Oneoftheworstthingsthatcanhappenwhenyouareinthe______forcomposingisatotallackofideas.
【B1】______ThereareafewsmalldifferencesinthegrammarandthereareafewwordsthataredifferentoneithersideofAtlant
【B1】______ThereareafewsmalldifferencesinthegrammarandthereareafewwordsthataredifferentoneithersideofAtlant
OneSmallWord,OneBigDifferenceinMeaningAsNeilArmstrongbecamethefirstmantowalkontheMoon,aglobalaudience
【46】Teaisakindofdrinkmadebypouringboilingwaterontoprocessedteatreeleaves.Chinawasthefirstcountrytoproduce
—So,whatdidyouthink?—Really,notatallbad.She’sdifferentfromhowsheappearsonTV,thatactress,isn’tshe?—Yes,
随机试题
简述医德规范的基本内容。
A.脊髓B.延髓C.中脑D.下丘脑瞳孔对光反射中枢位于
术前禁食水最主要的目的是()。
荥穴主治
应是执业药师应具有主管药师或药学相关专业工程师(含)以上技术职称
轮状病毒肠炎所致腹泻的临床特点不包括
理财规划中有一步骤是执行个人理财规划方案,在这个步骤里通常建议客户签署一份文件,文件上面排列出客户可以接受的建议清单及具体内容,包括执行人的姓名和相应的职责。这样做的原因是( )。
依据营业税的有关规定,下列行为中不征或免征营业税的有()。
简述在浮动汇率制度下影响汇率的主要因素。(中国人民银行1999)
ThereisanoldsayinginEnglish:"Laughteristhebestmedicine".Untilrecently,fewpeopletookthesayingveryseriously.N
最新回复
(
0
)