单项选择题From the context, we know that attributes (in Para: 1) means ______.
单项选择题Which of the following does NOT present a true picture of American blacks
单项选择题According to the text, we know that Spanish-Americans ______.
单项选择题A plural society (in Para. 3) refers to a society where ______.
单项选择题Freight costs were reduced to 10% of what they had been because of ______.