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
29
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] 【C15】
选项
A、back
B、hind
C、behind
D、front
答案
B
解析
hind limb后腿。
转载请注明原文地址:https://tihaiku.com/zcyy/3208476.html
相关试题推荐
Itisnaturaltofeeluncomfortableinalanguageclass.You’reusedtobeing
Itisnaturaltofeeluncomfortableinalanguageclass.You’reusedtobeing
Itisnaturaltofeeluncomfortableinalanguageclass.You’reusedtobeing
Itisnaturaltofeeluncomfortableinalanguageclass.You’reusedtobeing
Itisnaturaltofeeluncomfortableinalanguageclass.You’reusedtobeing
Itisnaturaltofeeluncomfortableinalanguageclass.You’reusedtobeing
PassaqeTwo(1)Oneoftheobviousproblemswithpredictingthefuture
PassageFourSpeakingtwolanguagesratherthanjustonehasobviouspra
PassageFourSpeakingtwolanguagesratherthanjustonehasobviouspra
Thedestructionofournaturalresourcesandcontaminationofourfoodsuppl
随机试题
Ofallthecomponentsofagoodnight’ssleep,dreamsseemtobeleastwith
[originaltext]M:Excuseme.Haveyoubeenwaitinglong?W:Abouttenminutes.M
目前检测CK-MB主张使用的较特异方法是A.免疫抑制法 B.CK-MB质量测定
下列有关长期债券筹资的说法中,错误的是( )。A.发行目的通常是为了建设大型项
30岁初孕妇,患二尖瓣关闭不全,现妊娠28周,LOA。心功能Ⅱ级,来围生期门诊检
消渴病的病理变化主要是A.肾阴亏损 B.胃热炽盛 C.肺热津伤 D.阴虚燥
关于致病性行为模式的叙述,正确的是A:致病性行为模式如A型性格常导致肿瘤 B:
电缆终端伞裙局部区域过热,其电压制热型缺陷的温差判定标准为0.5-1K
13,9,11,6,9,3,(),()A.6,0 B.
某商店中甲、乙、丙三种商品销量分别为6件、10件和5件,总销售额为x元;其中乙商
最新回复
(
0
)