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
22
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] 【C12】
选项
A、anything
B、that
C、everything
D、all
答案
D
解析
all they had to do他们只须做。
转载请注明原文地址:https://tihaiku.com/zcyy/3208473.html
相关试题推荐
Canalsarewatercoursesconstructedtoimproveandextendnaturalwaterways
Canalsarewatercoursesconstructedtoimproveandextendnaturalwaterways
Ourape-menforefathershadnoobviousnaturalweaponsinthestruggleforsu
Ourape-menforefathershadnoobviousnaturalweaponsinthestruggleforsu
Ourape-menforefathershadnoobviousnaturalweaponsinthestruggleforsu
Ourape-menforefathershadnoobviousnaturalweaponsinthestruggleforsu
Ourape-menforefathershadnoobviousnaturalweaponsinthestruggleforsu
Ourape-menforefathershadnoobviousnaturalweaponsinthestruggleforsu
Ourape-menforefathershadnoobviousnaturalweaponsinthestruggleforsu
Thedifferencebetweenaliquidandagasisobvious【B1】______thecondition
随机试题
WhatdoesBlueMagazinemostprobablyreferto?[br][originaltext]M:Iwastol
A------TakeCareNottoLeaveThingsBehindJ------ShootingProhibitedB------L
[originaltext]W:Dr.Thomas?ThisisKeetBradleyfromtheDailyNews.I’dliketo
[originaltext]M:So,Susan,doyouhaveanythingplannedforthisSaturday?W:
泰山石刻可以说是中国文化史中的一朵奇葩。历代帝王到泰山祭天告地,儒家释道传教授经
在贯彻效益性原则时,要处理好投资项目的财务效益和国民经济效益的关系。下列说法中错
关于计价错误的处理及责任承担,以下表述错误的是( )。A.当估值或资产计价错误
考虑建设工程的施工特点、工艺流程、资源利用、平面或空间布置等要求,可采用不同的施
关于轻钢龙骨罩面板施工工艺的说法,正确的有()。A.在地面上弹出水平线并将
初产妇,29岁。孕37周,规律宫缩3小时。产科检查:宫口开大2cm,臀先露,S=
最新回复
(
0
)