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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

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

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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【S1】______with the bear, whose strength, speed and claws【S2】______an impressive "smallfire" 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【S3】______to failure and extinction. But they were【S4】______with enormous concealed advantage of a kind not possessed by any of their competitors.  In the search for the pickings of the forest, the ape - men had【S5】______efficient stereoscopic 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【S6】______the reach of the original  inhabitants of the grassland. Good logn-distance sight was quite another matter. Lack of long- distance vision had. ’not been a problm for forestdweling apes and mondeys because the higher the viewpoint, the greater the range of sight - so all they had had to do was climb a tree. Out in the open, however,  this simple solution was not【S7】______Climbing a hill would have helped, but in many places the ground was flat. The ape - men【S8】______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 un-stable and it meant that tile already slow ape -men became slower still. However, they persevered and their bone structure gradually became【S9】______to tile new, unstable position that【S10】______them the name Homo erectus, upright man.

    A)available                                   I)doomed
    B)pants                                       J)adapted
    C)adopted                                     K)posed
    D)compare                                     L)endowed
    E)deserved                                    M)earned
    F)provided                                    N)beyond
    G)developed                                   O)equipped
    H)accustomed
【S1】
选项
答案D
解析 本句的句意为“我们人类的老祖宗——猿人，既没有像大型猫科动物那样的利齿，也没有那样强有力的爪子；他们也不能和熊相比”，“与……相比”可用compare与之搭配。
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