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  3. The dog has always been considered man’s best friend. Always noted for being particularly faithful in watching over children, he

The dog has always been considered man’s best friend. Always noted for being particularly faithful in watching over children, he

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问题     The dog has always been considered man’s best friend. Always noted for being particularly faithful in watching over children, he also has his place by the fireside, in the cow pasture, on the sheep range, and beside the hunter or blind. He is easy to train, works hard, and often performs astonishing feats. And in the frozen polar regions, he was once the principal motive power, before being largely replaced by the plane and helicopter.
    Because he howls or whines in the presence of impending death, the dog was once thought to have supernatural powers and believed to be capable of seeing gods and ghosts invisible to people. Actually, the basis for these beliefs lies in the dog’s sensitivity to people’s feelings and his superior hearing ability and sense of smell, which enable him to detect signs hidden from human observation. His record of saving lives is outstanding, for he often gives warning of fire and other dangers not noticed by his master.
    The dog’s major contribution, however, has been to medical research. Both his diet and his structure are comparable to those of the human being, and so he has been the subject of countless demonstrations and experiments. Open-heart surgery has been made possible largely because of the dog. But his sacrifice has repaid his own species as well by safeguarding it from rabies(狂犬病), distemper, and other diseases.
The dog probably whines in the presence of death because he can______.
选项 A、see ghosts and spirits
B、give warning of danger
C、sense unhappiness around him
D、perform astonishing feats
答案C
解析 第二段第一句讲到狗在逼近的死亡前号叫哀号，第二句指出这是因为狗对人类的感情非常敏感，而且超人的听觉和嗅觉也使它能够察觉人类观察发现不了的(危险)信号。因此可以得出C项是正确答案“感知它周围的不幸”。
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