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
考研
Our ape-men forefathers had no obvious natural weapons in the struggle for【C1】______in the open. They had neither the powerful t
Our ape-men forefathers had no obvious natural weapons in the struggle for【C1】______in the open. They had neither the powerful t
admin
2015-08-29
91
问题
Our ape-men forefathers had no obvious natural weapons in the struggle for【C1】______in the open. They had neither the powerful teeth nor the strong claws of the big cats. They could not【C2】______with the bear, whose strength, speed and claws【C3】______an impressive "small-fire" weaponry. They could not even defend themselves【C4】______running swiftly like the horses, zebras or small animals. If the ape-men had attempted to【C5】______on those terms in the open, they would have been【C6】______to failure and extinction. But they were【C7】______with enormous concealed advantages of a kind not possessed by any of their competitors.
In the【C8】______for the pickings of the forest, the ape-men had【C9】______efficient stereoscopic vision and a sense of colour that the animals of the grasslands did not possess. The ability to see clearly at close range【C10】______the ape-men to study practical problems in a way that lay far【C11】______the reach of the original inhabitants of the grassland. Good long-distance sight was quite another matter.
【C12】______of long-distance vision had not been a problem for forest-dwelling apes and monkeys because the higher the viewpoint, the greater the range of sight—so【C13】______they had had to do was climb a tree. Out in the open, however, this simple solution was not【C14】______. Climbing a hill would have helped,【C15】______in many places the ground was flat. The ape-men【C16】______the only possible solution. They reared up as high as possible on their hind limbs and began to walk upright.
This vital change of physical position brought about considerable【C17】______. It was extremely unstable and it meant that the already slow ape-men became slower still.【C18】______, they persevered and their bone structure gradually became【C19】______to the new, unstable position that【C20】______them the name Homo Erectus, upright man.
【C17】
选项
A、benefits
B、advantages
C、conveniences
D、disadvantages
答案
D
解析
在下文中出现了unstable,slower之类的词,对于要在充满竞争的野外生存下去的猿人来说,这是不利于他们生存的变化,所以此处的正确答案为D项disadvantages“劣势,不利条件”。
转载请注明原文地址:https://kaotiyun.com/show/8d74777K
0
考研英语一
相关试题推荐
ResearchersledbyNewYorkUniversityneuroscientistJosephLeDouxrecentlyclaimedtobethefirstscientiststoeraseasingl
Issittingintrafficasinevitableasdeathandtaxes?Perhapsnot.Manycountriesnowhavededicatedtraffic-monitoringcentre
FormostofmyworkinglifeIhavebeenapracticingscientist.Ihaveworkedinindustrialandacademiclaboratories—asalabor
Avarietyofillegalactscommittedbypeopleinthecourseoftheiremployment,fortheirownpersonalgain,arecollectivelyk
Humansareuniqueintheextenttowhichtheycanreflectonthemselvesandothers.Humansareableto【C1】______.tothinkinab
AmericanMuseumofNaturalHistoryisoneofthelargestnaturalandhistoricmuseumsintheworldandoneofthemainnaturalh
AmericanMuseumofNaturalHistoryisoneofthelargestnaturalandhistoricmuseumsintheworldandoneofthemainnaturalh
AmericanMuseumofNaturalHistoryisoneofthelargestnaturalandhistoricmuseumsintheworldandoneofthemainnaturalh
AmericanMuseumofNaturalHistoryisoneofthelargestnaturalandhistoricmuseumsintheworldandoneofthemainnaturalh
AmericanMuseumofNaturalHistoryisoneofthelargestnaturalandhistoricmuseumsintheworldandoneofthemainnaturalh
随机试题
吸光溶液的最大吸收波长与溶液浓度无关。
女性,25岁,初产妇,孕36周,孕期检查正常。2周来皮肤黄,食欲好,皮肤瘙痒。检查血胆红素51.3μmol/L,ALT正常,血胆汁酸明显升高,血压120/80mmHg。下列哪项可能性大
药物的过敏反应与
制备阿胶时加入冰糖的目的是
关于民事纠纷案件的执行,下列说法正确的是()。[2013年真题]
行政领导在整个行政管理系统中所处地位是()。
用于比较和解释测验结果的参照分数标准是()。
从教育的发展历程来看,教育平等先后经历了原始教育平等、教育特权、现代教育平等三个阶段。()
如果A=2×2×5,B=2×3×5,那A、B的最大公约数是______,最小公倍数是______.
求,其中D:x2+y2≤π2.
最新回复
(
0
)