首页
登录
职称英语
Our ape-men forefathers had no obvious natural weapons in the struggle for
Our ape-men forefathers had no obvious natural weapons in the struggle for
游客
2023-11-22
4
管理
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【C1】______ 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 compete on those terms in the open, they would have been【C5】______ to failure and extinction. But they were【C6】______ with enormous concealed advantages of a kind not possessed by any of their competitors.
In the search 【C7】______ the pickings of the forest, the ape-men had【C8】______ efficient stereoscopic vision and a sense of colour that the animals of the grasslands did not possess. The ability to see clearly at close 【C9】______ permitted the ape-men to study practical problems in a way that lay far【C10】______ the reach 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 to do was climb a tree. Out in the open, however, this simple solution was not【C13】______ Climbing a hill would have helped, but in many places the ground was flat. The ape-men【C14】______ the only possible solution. They reared up as high as possible on their【C15】______ limbs and began to walk upright.
This【C16】______ 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. [br] 【C1】
选项
A、claws
B、paws
C、hoofs
D、hands
答案
A
解析
claw指猫科动物或鸟类足趾上的尖锐指甲、爪;paw指带有这类尖锐指甲的动物的足。
转载请注明原文地址:https://tihaiku.com/zcyy/3208462.html
相关试题推荐
PassageFourSpeakingtwolanguagesratherthanjustonehasobviouspra
Thedestructionofournaturalresourcesandcontaminationofourfoodsuppl
Thedestructionofournaturalresourcesandcontaminationofourfoodsuppl
Thedestructionofournaturalresourcesandcontaminationofourfoodsuppl
Thedestructionofournaturalresourcesandcontaminationofourfoodsuppl
Thedestructionofournaturalresourcesandcontaminationofourfoodsuppl
Naturallytheyoungaremoreinclinedtonoveltythantheireldersanditis
Weleftthemeeting,thereobviously______nopointinstaying.A、wereB、beingC
Thatexperiencesinfluencesubsequentbehaviorisevidenceofanobviousbu
Thatexperiencesinfluencesubsequentbehaviorisevidenceofanobviousbu
随机试题
EatlikeaGreek,anditcouldcutyourriskofhavingaheartattack,strok
Sheansweredwithan______"No"totherequestthatsheattendthepublichearing
下列选项中可能获得发明专利的是()A.永动机 B.一种新型电脑芯片 C.
教师道德行为价值的大小,在很大程度上取决于构成教师道德行为的各具体要素。()
下面关于旋转因子的描述中,错误的是()。
现金流偿债法的基本评估程序中,自由现金流量是指()。A.债务企业现金流量表当中
经产妇,26岁,足月妊娠,因规律宫缩3小时入院。胎动及宫缩后胎心突然变慢。肛查:
每道题在左边的题干中给出一套图形,其中包括五个图,这五个图呈现一定的规律性。在右
小明、小刚和小红三人一起参加一次英语考试,已知考试共有100道题,且小明做对了6
1.背景 某机场工程的混凝土成本数据如下表所示。目标成本为504000元,实际
最新回复
(
0
)