A.to make the United States gain time to arm itself
B.to actually help the aggressors by making clear that the United States would not intervene
C.to get the United States involved in the war
D.to prevent the United States form being dragged into the war

A.The main cause was big power struggle for control of the world.
B.It was the worldwide economic crisis.
C.It was the military expansion of Japan,and Germany.

A.the reappearance of the"powwow"
B.the legal steps they are taking to recover land and resources that have been grabbed form them illegally
C.their refusal to live on reservations
D.None of the above

A.educaution
B.family and hardwork
C.education
D.BandC

A.the language problem　
B.their low education
C.their low education　
D.discrimination

A.inFlorida
B.in business with Cuba
C.politically7
D.economically

A.discrimination in employment still exists
B.discrimination in university admission still exists
C.poverty rate of the blacks is the highest among all racial and ethnic groups
D.inequality and subtle discrimination still exist

A.a favorable picture　
B.a negative picture
C.a mixed picture　
D.an encouraging picture

A.core cities to the suburbs　
B.rural areas to cities
C.small cities to large cities　
D.None of the above

A.the Northwest　
B.the sunbelt areas
C.the South　
D.the Southwest