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
Our ape-men forefathers had no obvious natural weapons in the struggle for survival in the open. They had neither the powerful t
Our ape-men forefathers had no obvious natural weapons in the struggle for survival in the open. They had neither the powerful t
admin
2013-09-26
31
问题
Our ape-men forefathers had no obvious natural weapons in the struggle for survival in the open. They had neither the powerful teeth nor the strong claws of the big cats. They could not【C1】______with the bear, whose strength, speed and claws【C2】______an impressive " small fire" weaponry. They could not even【C3】______themselves by running swiftly like the horses, zebras(斑马)or small animals. If the ape-men had【C4】______to compete on those terms in the open, they would have been【C5】______to failure and extinction. But they were【C6】______with a great deal of【C7】______advantages of a kind not possessed by any of their competitors. In the search【C8】______the pickings of the forest, the ape-men had【C9】______efficient stereoscopic(立体感的)vision and a sense of color that the animals of the grasslands did not possess. The ability to see clearly at close range permitted the ape-men to study practical problems in a way that lay far【C10】______the reaches of the original inhabitants of the grassland. Good long-distance sight was【C11】______another matter.
Lack 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【C12】______they had had to do was climb a tree. Out in the open, however, this simple solution was not【C13】______. Climbing a hill would have helped, but the ground was【C14】______in many places. The ape-men【C15】______the only possible solution. They【C16】______up as high as possible on their hind limbs and began to walk upright.
This vital change of【C17】______position brought about considerable disadvantages. 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 of upright man.
【C13】
选项
A、sufficient
B、enough
C、available
D、convenient
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/db27777K
0
大学英语六级
相关试题推荐
Largecompaniesneedawaytoreachthesavingsofthepublicatlarge.Thesameproblem,onasmalle【B1】______facespracticall
Largecompaniesneedawaytoreachthesavingsofthepublicatlarge.Thesameproblem,onasmalle【B1】______facespracticall
Whensocialscientistsusethetermculturetheytendtobetalkingaboutalessrestrictiveconceptthanthatimpliedineveryd
Whensocialscientistsusethetermculturetheytendtobetalkingaboutalessrestrictiveconceptthanthatimpliedineveryd
Whensocialscientistsusethetermculturetheytendtobetalkingaboutalessrestrictiveconceptthanthatimpliedineveryd
Moms,dads,orcaregiverswhomainlytalktotheiroffspringusingcommandsratherthanreasoningmaygettheirkidstodowhat
Mostpeopledon’twakeupinthemorning,combtheirhair,andwalkoutthefrontdoorandontotheworldstage.ButBritain’sP
Forcenturies,explorershaveriskedtheirlivesventuringintotheunknownforreasonsthatweretovaryingdegreeseconomican
A、Thekitchenisattheendoftheroom.B、Thekitchenhassomemini-furniture.C、Basicappliancesinthekitchencanbeused.D
A、Diet.B、Overweight.C、Lackofsleep.D、Sleepingdisorder.B短文开篇便提到,肥胖对孩子和成年人来说,都是不断困扰的问题。选B。
随机试题
Whatisthe’biggestcityintheworld?Thatis,【21】cityhasthelargestpopulation?Thisseemslike【22】questiontoanswer,but
影响酶促反应速度的因素不包括
关于健康危险因素评价的描述,正确的是
1999年4月南方某大型湖泊1800亩水面泛起了一片片死鱼,湖水呈黑色,空气中弥漫着难闻的臭味,使人感到呼吸困难,头昏、恶心等。首先应考虑作的检测项目是
施工企业年度安全生产管理目标出台后,企业主要负责人应明确专人,根据企业安全生产责任制的要求,将目标分解到()。
根据《中华人民共和国城乡规划法》的规定,下列关于城乡规划的编制和审批程序的表述中不正确的是()。
背景:某建设单位新建办公楼,与甲施工单位签订施工总承包合同。该工程门厅大堂内墙设计做法为干挂石材,多功能厅隔墙设计做法为石膏板骨架隔墙。施工过程中发生下列事件:事件一:建设单位将该工程所有门窗单独发包,并与具备相应资质条件的乙施工单位签订门窗施工合同。
工程项目安全检查的注意事项包括( )。
对直接用于出售的存货和用于继续加工的存货,企业在确定其可变现净值时应当考虑不同的因素。()
当动物缺乏某激素时,可以通过“饲喂法”或“注射法”对该激素进行人为补充,下列只可通过以上一种方法补充的激素是()。①生长激素②甲状腺激素③胰岛素④性激素
最新回复
(
0
)