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  3. Our ape-men forefathers had no obvious natural weapons in the struggle for survival in the open. They had neither the powerful t

Our ape-men forefathers had no obvious natural weapons in the struggle for survival in the open. They had neither the powerful t

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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
【C3】
选项
答案D
解析 此处要填动词。此处是be…with结构，选项中，endow意为“赋予、授予、强调”，强调“天生的”品质，而be endowed with意为“天生具备……”。此处易误选为bestowed(把……赠予)，显然不符合语境。因此，正确答案是D。
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