2. 职称英语
  3. 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2023-12-30  25
问题     Our ape-men forefathers had no obvious natural weapons in the struggle for survival in the open. They had neither the【C1】________teeth nor the strong claws 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 by running【C4】________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 color that the animals of the grassland 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【C12】________the greater the range of sight, so all 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【C14】________the ground was flat. The ape-men【C15】________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【C16】________disadvantages. It was extremely【C17】________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 Homoerectus, upright man. [br] 【C19】
选项 A、accustomed
B、familiarized
C、adapted
D、suited
答案 C
解析 be accustomed to意为“习惯于……”，be familiarized with意为“与……相熟”，adapt to sth．或adapt oneself to sth．意为“适应……”，be suited to sth．意为“适合……的”。句意为“它们的骨骼结构渐渐________新的、不稳定的姿势”，所以C最符合文意。
转载请注明原文地址:https://tihaiku.com/zcyy/3318206.html
相关试题推荐
随机试题
最新回复(0)