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Man has three basic needs: food, clothing and shelter. If a man lives in a warm climate, clothing is not absolutely necessary. H
Man has three basic needs: food, clothing and shelter. If a man lives in a warm climate, clothing is not absolutely necessary. H
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2013-02-05
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Man has three basic needs: food, clothing and shelter. If a man lives in a warm climate, clothing is not absolutely necessary. However, man cannot live without food, and he has little chance of survival without shelter. Mankind needs shelter to protect him from the weather, wild animals, insects and his enemies. Long before man learned how to build houses, he looked for natural shelters, as the animals did. He found that he could protect himself by climbing up into trees or by crouching under the overhanging edges of cliffs, or by crawling into caves. The first shelters or homes actually built by man were very simple. For his building materials, he used what he could find easily around him: rocks, tree branches, dried grasses, animal skins. It was a long time, however, before man began to build permanent shelters. The reason is that until man learned to farm, he lived by hunting. And in order to follow game, he had to be able to move from one hunting ground to another. Thus, the first man-made shelters were those that could easily be transported.
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专业英语四级
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