词根demo表示people，graph表示to write，writing，那么单词demography表示的含义，下列错误的有
词根demo表示people，graph表示to write，writing，那么单词demography表示的含义，下列错误的有
According to American historians and specialists in demography, there are _____ great population movement in the history of the United States. A: two B: three C: four D: five
According to American historians and specialists in demography, there are _____ great population movement in the history of the United States. A: two B: three C: four D: five
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