Do you live in a city? Do you know how cities began? Long long ago, there were only a few thousand people in the world. These people moved from place to place. They moved over the land, hunting(打猎) animals for food.
A long time passed. These people began growing crops. No one knows how or when those people learned about growing food. But when they did, their lives changed, they did not have to move houses any more.
They could stay in one place and grow it. People began to live near each other. And so the first villages grew. Many people came to work in the villages. These villages grew bigger and bigger. Then people had machines, and lives in the villages changed again. They built factories. So the villages grew into cities. Some of them grew very big.
Today, some people are moving back to small towns.
How many people were there in the world long long ago?
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When didn’t people have to move houses any more ?
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What did the villages grow into after people built factories?
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Why did people move from place to place long long ago?
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Who knows when people learned about growing food?
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科目 英语   题型 阅读理解   难度 中等