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
39
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] 【C5】
选项
A、driven
B、doomed
C、forced
D、led
答案
B
解析
be doomed to sth.注定。
转载请注明原文地址:https://tihaiku.com/zcyy/3208466.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
PassaqeTwo(1)Oneoftheobviousproblemswithpredictingthefuture
PassaqeTwo(1)Oneoftheobviousproblemswithpredictingthefuture
Thedestructionofournaturalresourcesandcontaminationofourfoodsuppl
随机试题
IaskedmymotherifIcouldgoout,andshe______.A、descendedB、contentedC、co
[originaltext]Californiaisalandofvarietyandcontrast.Almosteverytyp
关于肾前性急性肾衰竭病因,不正确的是A.血管内血容量不足 B.心排血量降低
信托的基本特征包括( )。A.以信任为基础,受托人应具有良好的信誉 B.信托
甲建设单位与乙施工单位签订了施工总承包合同,乙施工单位将其中的一部分工程分包给丙
在货币供给一定的条件,货币乘数与基础货币成正比。
李清现年50岁,夫妻感情一直不错,最近这段时间以来,李清开始出现情绪不稳定、易激
“四个一”背后的千年大计 习主席在今年概括出了中国共产党关于生态
均能滋阴清热,主治阴虚血热所致的月经先期、经血量多的中成药是A.八珍益母丸 B
屋面防水工程应满足的要求是()。A.结构找坡不应小于3% B.找平层应留设间距
最新回复
(
0
)