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Long, long ago there were only a few thousand people in the world. These people move form place to place over the land, hunting animals for food. No one knows how or when these people learned about growing food. But when they did, their lives changed. They did not have to look for food any more. They could stay in one place and grow it. People began to live near one another. And so the first village grew. Many people came to work in the villages. These villages grew very big. When machines appeared(出现), life in the villages changed again. Factories were built. More and more people lived near the factories. The cities grew very big. Today some people are moving back to small towns. Can you tell why? 1. The best title(题目)of the text should be ___. A. Cities or Villages B. Back to Towns C. How Cities Grew D. People and Animals 2. The underlined word they in the second paragraph refers to(指的是) ___. A. villages B. animals C. cities D. people 3. When factories were built, ___. A. more people live near the factories B. people began to live in the factories C. many people began to work in villages D. many machines appeared in big factories | 
