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
2023-08-16
82
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 per severed 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,故选名词或代词,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/2930582.html
相关试题推荐
[originaltext]Pianosarenormallyfoundinbuildingforobviousreasons.Ho
[originaltext]Pianosarenormallyfoundinbuildingforobviousreasons.Ho
Throughouthistorymanhasobservedsuchnaturalcyclesastherisingandse
Throughouthistorymanhasobservedsuchnaturalcyclesastherisingandse
Throughouthistorymanhasobservedsuchnaturalcyclesastherisingandse
Throughouthistorymanhasobservedsuchnaturalcyclesastherisingandse
Throughouthistorymanhasobservedsuchnaturalcyclesastherisingandse
[originaltext](9)Studentswhostruggledearlyonwithbasicreadingandma
Nottoomanydecadesagoitseemed"obvious"bothtothegeneralpublicand
Nottoomanydecadesagoitseemed"obvious"bothtothegeneralpublicand
随机试题
Thesungivesofflightandwarmth,______(这使用权植物生长变为可能).whichmakesitpossibl
ItwastheEnglishscientist-philosopherFrancisBaconwhosaid,"Knowledgei
Despitealloftheadvancesinmedicine,healthcareprovidershaveneverbe
关于软件测试与质量保证,正确的理解是______。A.软件测试关注的是过程中的活
测量用仪器设备按下列哪种形式分类可以分成单件式和集成式?()A.工作原理 B.
舌根的淋巴管汇入A.颌下淋巴结 B.颈浅淋巴结 C.腮腺淋巴结 D.颈深上
用UV和HPLC法时,一般回收率可达A.70%~90% B.80%~100%
并联电容器组允许在不超过额定电流的30%的运行情况下长期运行。三相不平衡电流不应
小指A.占全手功能的40%,如受到损伤后应尽可能地予以修复或再造 B.占全手功
甲企业2021年2月委托乙企业(一般纳税人)加工一批粮食白酒和一批黄酒,甲企业提
最新回复
(
0
)