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
2023-08-27
38
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【C2】______an impressive " small fire" weaponry. They could not even【C3】______themselves by running swiftly like the horses, zebras(斑马)or small animals. If the ape-men had【C4】______to compete on those terms in the open, they would have been【C5】______to failure and extinction. But they were【C6】______with a great deal of【C7】______advantages of a kind not possessed by any of their competitors. In the search【C8】______the pickings of the forest, the ape-men had【C9】______efficient stereoscopic(立体感的)vision and a sense of color 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【C10】______the reaches 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 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 the ground was【C14】______in many places. The ape-men【C15】______the only possible solution. They【C16】______up as high as possible on their hind limbs and began to walk upright.
This vital change of【C17】______position brought about considerable disadvantages. 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 of upright man. [br] 【C14】
选项
A、round
B、flat
C、steep
D、narrow
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2961965.html
相关试题推荐
Forme,scientificknowledgeisdividedintomathematicalsciences,natural
Forme,scientificknowledgeisdividedintomathematicalsciences,natural
Forme,scientificknowledgeisdividedintomathematicalsciences,natural
Forme,scientificknowledgeisdividedintomathematicalsciences,natural
Forme,scientificknowledgeisdividedintomathematicalsciences,natural
Forme,scientificknowledgeisdividedintomathematicalsciences,natural
Forme,scientificknowledgeisdividedintomathematicalsciences,natural
Forme,scientificknowledgeisdividedintomathematicalsciences,natural
Forme,scientificknowledgeisdividedintomathematicalsciences,natural
Forme,scientificknowledgeisdividedintomathematicalsciences,natural
随机试题
Thenewborncanseethedifferencebetweenvariousshapesandpatternsfrom
Beforeyoustarttomakethecake,gatherupallthenecessary______andputth
[originaltext]M:ImuchpreferMrs.Brown’slessons.I’vegotabookofnotesf
()可为用户实现电能质量控制及为用户提供特定需要的电力供应。A.电力集成技术
有人说,P2P应用消耗大量的网络带宽,甚至占网络流量的90%。对此的合理解释
统计法的调整对象具有( )的特点。A.广泛性和多样性 B.特殊性和复杂性
图为细胞膜上与K+、Na+转运有关结构的示意图,依据此图做出的判断正确的是(
下列属于税收收入的有()。A.增值税 B.消费税 C.营业税 D.政府性基
下列关于泡沫灭火系统阀门强度试验和严密性试验的说法,不正确的是()。A.强度和
根据《水利水电工程标准施工招标文件》(2009年版),水利工程施工合同附件应包括
最新回复
(
0
)