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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1.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

2.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

3.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

4.单项选择题The population between the age of 25 and 44 increased by 28.1%from 1980 to 1989 because()

A.this was the period of large inflow of young immigrants
B.this was the birth age of the baby boomers.
C.the large number born during WW II reached this age bracket
D.those who were born in the period of baby boom reached this age bracket

6.单项选择题One of the reasons for the growth of population in Florida is because of its()

A.expanding economy
B.large number of Cuban-Americans
C.climate
D.exotic food

7.单项选择题The three states that have seen the fastest growth in population in the past 20 years are()

A.California,Arizona and New Mexico
B.California,Florida and Nevada
C.New Mexico,Texas and Florida
D.Arizona,Nevada and Florida

8.单项选择题()was an important immigration spot in late 19th century and early 20th century.

A.Ellis Island 
B.San Francisco
C.Hawaii 
D.Miami

10.单项选择题A major source of population growth is()

A.immigration 
B.baby boom
C.rising birth rate 
D.larger number of young people