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
100
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
WaterforLifeWaterisessentialforlife.Yetmanymillionsofpeoplearoundtheworldfaceawater【C1】______(short).Man
WaterforLifeWaterisessentialforlife.Yetmanymillionsofpeoplearoundtheworldfaceawater【C1】______(short).Man
—Imusthaveeatensomethingwrong.Ifeellike______.—Itoldyounottoeatatarestaurant.You’dbetter______athome.
Bicyclesharinghasbeenahotlydebatedtopicoverthepasttwoyears.BicyclesarenothingexotictoChinesepeople.Inthe19
HowtoLearnLanguageSuccessfully【B1】______Theycanpickupnewvocabulary,masterrulesorgrammar,andlearntowritein
【B1】______ThereareafewsmalldifferencesinthegrammarandthereareafewwordsthataredifferentoneithersideofAtlant
【B1】______ThereareafewsmalldifferencesinthegrammarandthereareafewwordsthataredifferentoneithersideofAtlant
WhyaretheresultsofKenya’s2016universityentranceexamlowerthan2015?
【B1】______Oneofthemostimportantaspectsofdoingbusinessinternationallyisbeingabletospeakotherlanguages.Forth
CindywasreadingfunnystoriesthatshehadfoundinabookbutitwasTim______wasmakingeveryonelaugh.
随机试题
政府卫生事业行政管理事务的主要内容包括()
下列哪项不是原发性胆汁性肝硬化的诊断依据
低钾血症最初的表现为
市场经济存在的规律有()。
非流动性负债包括长期借款、应付股利和其他非流动性负债等。()
经出入境检验检疫机关检查考核其用于( )的场地,符合规定的防疫条件的发给注册登记证。并应向检验检疫机关提出申请办理检疫审批手续,
深圳证券交易所股价指数有()。
下列测验中,属于投射测验的是
HDLC是一种数据链路控制协议,它是一种(117)协议。
Lookatthenotesbelow.Someinformationismissing.Youwillhearatelephonetalkontravelarrangements.Foreachquestion9
最新回复
(
0
)