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  3. Man first appeared on earth about 2 million years ago. Then he was little more than an animal, but early man had a big advantage

Man first appeared on earth about 2 million years ago. Then he was little more than an animal, but early man had a big advantage

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问题     Man first appeared on earth about 2 million years ago. Then he was little more than an animal, but early man had a big advantage over the animals. He had in his brain special groups of nerve cells, not present in animals, that enabled him to invent a language and use it to communicate with his fellow men. (46)This ability to speak was of great value because it allowed men to share ideas, and to plan together, so that tasks impossible for a single person could be successfully undertaken by intelligent team-work. Speech also enabled ideas to be passed on from generation to generation so that the stock of human knowledge slowly increased.
    It was this special ability that put men far ahead of other living creatures in the struggle for existence. (47)He mastered darkness first with dim lights and later with brighter and brighter lamps, until he can now make for himself so dazzling a light with an arc lamp that, like the sun, it is too strong for his naked eyes.
    (48)Man found that his own muscles were too weak for the work which he wanted to do; be explored many other forms of power until now he has his hands on the ultimate source of physical energy, the nuclear power. From man’s earliest days the flight of birds has raised his wonder and desire. Why should he not fly as they did? Then he began to experiment. At last he learnt how to make the right machines to carry him through the air. Now he can fly faster than sound. Already he has plans for conquering space, and a series of experiments has been completed. (49)It will not be long now before man takes a giant step away from his planet and visits the moon, learning what it is like to have no weight to his body, no upward direction and no downward.
    Man, always a wanderer, has to overcome the difficulty of adapting himself to different climates. (50)Fortunately, in spite of having no thick skin or warm fur to protect him, he is peculiarly strong compared with other living creatures, most of whom are unable to live far outside the region that suits them best.

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答案幸运的是，虽然人没有很厚的皮肤或暖和的毛皮来保护自己，但是与其他的动物相比，他特别强有力，因为大多数动物无法在远离他们所适应的地区生活。
解析 注意in spite of词组的用法。
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