单项选择题
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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相关考题
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单项选择题
During the third wave of immigration from 1890 to 1910,many came from（）
A.Britain and the Netherlands
B.Austria-Hungary and Russia
C.Japan and China
D.Mexico and Cuba -
单项选择题
Between 1845 and 1854,about 1.5 million Irishmen emigrated to United States because of（）
A.famine
B.English oppression
C.war
D.Both A&B -
单项选择题
Up to the end of WW II,there were（）waves of large-scale emigration to the United States.
A.four
B.two
C.three
D.None of the above
