单项选择题The warning given by Frank Church is ______.
单项选择题As far as the writing technique is concerned, the author mainly resorts to ______.
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 ______.