[填空题]
Ironically, in the United States, a country of immigrants,
prejudice and discrimination continue to be serious problems. There was often
tension between each established group of immigrants and each{{U}} (36)
{{/U}}group. As each group became more{{U}} (37) {{/U}} successful,
and more powerful, they excluded newcomers from full participation in the
society. Prejudice and discrimination are part of American history; however,
this prejudicial treatment of different groups is nowhere more {{U}} (38)
{{/U}}than with black Americans.
Blacks had{{U}} (39)
{{/U}}disadvantages. For the most part, they came to the land of opportunity
as slaves and they were not free to keep their heritage and cultural{{U}}
(40) {{/U}}Unlike most European immigrants, blacks did not have the
protection of a support group. They could not mix easily with the{{U}} (41)
{{/U}}society either because of their skin color. It was difficult for them
to adapt to the