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
70
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.
Because the intricate network of the many different parts is required not only for supporting and balancing a heavy superstructure but to enable the multiple motions and actions, hundreds or thousands of times daily.
选项
答案
这不同部分构成的错综复杂的网络,不仅需要支持和平衡沉重的身躯,还需要保证每天几百或几千次的动作。
解析
(not only…but(also)不仅…而且。intricate错综复杂的。multiple多种多样的。)
转载请注明原文地址:https://kaotiyun.com/show/KSNK777K
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
【B1】______Manyofthesecustomsincludestoriesandbeliefsrelatedtocreatures,realormagical,takingtheteeth.InAsia,fo
HowtoLearnLanguageSuccessfully【B1】______Theycanpickupnewvocabulary,masterrulesorgrammar,andlearntowritein
【B1】______Manyofthesecustomsincludestoriesandbeliefsrelatedtocreatures,realormagical,takingtheteeth.InAsia,fo
Wenowtakephotographyverymuchforgranted.Wecanhardlyimaginenewspapers,magazinesandbookswithoutphotographs.Scient
Wenowtakephotographyverymuchforgranted.Wecanhardlyimaginenewspapers,magazinesandbookswithoutphotographs.Scient
JohnWaltersisthedirectoroftheUSOfficeofNationalDrugControlPolicy.HethinksthatmanyEuropeangovernmentsaretoo
Graffiti—adangerouswayoflifeScrawlinggraffitiisseenasacrimeintheUK,yetintheUSithasbecomearecognizedartf
Graffiti—adangerouswayoflifeScrawlinggraffitiisseenasacrimeintheUK,yetintheUSithasbecomearecognizedartf
Haveyoueverthoughtaboutinventingsomething?Didyouworrythatyourideawastoostrangeorunrealistic?Well,maybeyoush
随机试题
面试是一种双向性考试,不仅是招聘人了解应聘者,也是应聘者了解企业的过程。()
与向量(3,一4)正交的一个单位向量为_______.
A相使B相须C相杀D相恶E相反两种功效相似的药物配合应用,可以增强原有药物的疗效
对于证券转托管程序,转出证券营业部受理投资者申请时,需核对投资者的()。Ⅰ.身份证Ⅱ.银行账户Ⅲ.证券账户Ⅳ.转入证券营业部席位代码
课程与教学审美主要是指专门从美学角度对课程与教学问题进行探讨,其目的是通过艺术审美的理解和构建,努力把课程与教学提升到发现美、体验美、欣赏美和创造美的境界。从价值观的角度来分析,课程与教学审美的客观基础是()。
设函数y=y(x)满足微分方程y"-3y′+2y=2ex,且其图形在点(0,1)处的切线与曲线y=x2-x+1在该点的切线重合,求y=y(x)的表达式.
Ithasbeenjustlysaidthatwhile"wespeakwithourvocalorganswe(1)_____withourwholebodies".Allofuscommunicatewit
计算机网络的目标是实现______。
阅读程序:OptionBase1Dimarr()AsIntegerPrivateSubForm_Click()DimiAsIntege
(1)在考生文件夹下GUO文件夹中创建名为B3AP.TXT的文件,并设置属性为隐藏和存档。(2)将考生文件夹下PQNE文件夹中的PHEA.FF文件复制到考生文件夹下的XDM文件夹中,并将该文件命名为AHF.NA。(3)为考生文件夹中的HAWEL文件夹中
最新回复
(
0
)