单项选择题
The Cuban-Americans have done very well（）
A.inFlorida B.in business with Cuba C.politically7 D.economically
单项选择题 Although legal,official discrimination has been abolished（）
单项选择题 The current situation of African-Americans presents（）
单项选择题 Between 1960 and 1990,a large number of people moved from（）
