首页
登录
职称英语
Our ape-men forefathers had no obvious natural weapons in the struggle for s
Our ape-men forefathers had no obvious natural weapons in the struggle for s
游客
2023-08-24
50
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 claws of the big cats. They could not【C1】______with the bear, whose strength, speed and claws provided an impressive ’ small fire’ weaponry. They could not even defend themselves by 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【C2】______to failure and extinction. But they were【C3】______with enormous concealed advantages of a kind not possessed by any of their competitors. In the search of the picking of the forest, the ape-men had【C4】______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 permitted the ape-men to study practical problems in a way that lay far【C5】______the search of the original inhabitants of the grassland. Good long-distance sight was quite 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【C6】______they had had to do was climb a tree. Out in the open, however, this simple solution was not【C7】______. Climbing a hill would have helped, but in many places the ground was flat.
The ape-men【C8】______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 disadvantages. It was extremely unstable and it meant that the already slow ape-men became slower still. However, they persevered and their bone structure gradually became【C9】______to the new, unstable position that【C10】______them the name Homo erectus, upright man.
A)compare B)driven C)match D)endowed
E)doomed F)developed G)all H)adopted
I)earned J)generated K)familiarized L)adapted
M)available N)beyond O)bestowed [br] 【C6】
选项
答案
G
解析
此处they had had to do是定语从句,句子缺一主语,故选名次或代词,选项中,只有all符合要求,意为“他们过去必须做的一切就只是爬树”。因此,正确答案是G。
转载请注明原文地址:https://tihaiku.com/zcyy/2952265.html
相关试题推荐
[originaltext]Themostobviousdifferencebetweenradioandtelevisionist
[originaltext]Themostobviousdifferencebetweenradioandtelevisionist
[originaltext]M:ObviouslyfromSeattle,therearemanyfamouspeople.W:Ah,
[originaltext]M:ObviouslyfromSeattle,therearemanyfamouspeople.W:Ah,
[originaltext]M:So,you’veseenobviouslylifeinFrance,familylifeinFranc
[originaltext]M:So,you’veseenobviouslylifeinFrance,familylifeinFranc
[originaltext]M:So,you’veseenobviouslylifeinFrance,familylifeinFranc
Ourape-menforefathershadnoobviousnaturalweaponsinthestrugglefors
Ourape-menforefathershadnoobviousnaturalweaponsinthestrugglefors
Ourape-menforefathershadnoobviousnaturalweaponsinthestrugglefors
随机试题
OurEnglishteacherhas______son.A、a8-year-oldB、an8-years-oldC、a8-years-old
[originaltext]Thisistoday’ssportsnews.Intheworldoftennis,the
[originaltext]ThenorthernpartsoftheUnitedStatesgetverycoldinthe
正常人尿中可出现的管型是()A.细胞管型 B.颗粒管型 C.透明管
根据《期货从业人员执业行为准则(修订)》的规定,期货从业人员应当保守()。A、
患者女,40岁。因糖尿病肾病致慢性肾衰竭,对患者的饮食指导中哪项不妥A.保证充足
C
上市公司发行配股时,应在T-2日刊登配股明书、发行公告及网上路演公告。()
一幅值为I的雷电流绕击输电线路,雷电通道波阻抗为Z0,输电线路波阻抗为Z,则雷击
在双缝干涉实验中,光的波长600nm,双缝间距2mm,双缝与屏的间距为300cm
最新回复
(
0
)