题目内容：
根据下面资料，回答 Today, people all over the world are moving out of small villages in the country to go and live in big, noisy cities. They are moving from the peaceful hills, mountains, fields, rivers and streams of the countryside to the busy world of streets,
A.rows of houses, schools and shops B.many offices and factories C.a lot of factories and farms D.many houses with offices and factories
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答案解析：