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單項選擇題

Between 1960 and 1990,a large number of people moved from（）

A.core cities to the suburbs　
B.rural areas to cities
C.small cities to large cities　
D.None of the above

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單項選擇題

In the last great population movement,a large number of people moved to（）

A.the Northwest　
B.the sunbelt areas
C.the South　
D.the Southwest

單項選擇題

According to historians and specialists in demography,there are（）great population movement(s)in the history of the United States.

A.four　
B.three
C.five　
D.None of the above

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