美国概况练习题：1 _is the largest city and the chief port of the United States.A Washington D.CB Los AngelesC San Francisco D New York City2 _ enjoys the worst social and economic conditions.A Blacks B Hispanics C Indians D Asian Americans3 Washington D.C. is named after_.A the U.S. President George Washington B Christopher ColumbusC both George Washington and Christopher Columbus D none of them4 American and British Eng
