单选题 Americans are big ( ) of energy and products.

单选题 The ( ) of the immigrant is still an important part of the American character.

单选题 ( ) — movement from class to class — has always been characteristic of the United States.

单选题 The ( ) says, “All men are created equal.”

单选题 Immigrants came to America in search of greater prosperity and ( ).

单选题 The typical American had this kind of faith in automatic improvement, which we call ( ).

单选题 The courage to ( ) has been an American characteristic since the colonial times.

单选题 These popular “( )” stories exemplified the American Dream.

单选题 Americans believe in ( ) of opportunity.