单项选择题
A.California,Arizona and New Mexico B.California,Florida and Nevada C.New Mexico,Texas and Florida D.Arizona,Nevada and Florida
（）was an important immigration spot in late 19th centur...
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
The immigrants spread unevenly across the country,with（...
单项选择题The immigrants spread unevenly across the country,with（）having the largest percentage of immigrants.
A.Northeast B.the West C.Midwest D.the South
A major source of population growth is（）A.immigration B...
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
