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
单项选择题 A major source of population growth is（）
单项选择题 The annual population growth rate of the 1990s was （）
单项选择题 In（）each year the National Film Theatre hosts the London Film Fes-tival,at which some 250 new films from all over the world are screened.
