摘要：Do you live in a city? Do you know h 1 cities began? Long, long ago, there were o 2 a few thousand people in the world. These people moved from place to place. They moved over the land, huntinganimals for f 3.No one k 4 how or where these people learned to grow food. But when they did, their l 5 changed. They did not have to look for food any l 6. They could stay in one place and grow it.People began t 7 live near one another. And so the first villages g 8. . Many people came to work in the villages. These villages grew very big.When machines came along, life in the villages c 9 again. Factories were built. More and more people lived near the factories. The cities grew very big.Today, some people are m 10 back to small towns. This is strange, isn't it?

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