单项选择题
The spatial distribution of different racial and ethnic populations
demonstrates that segregation persists in virtually all of America’s housing
markets, from large urban areas to rural counties. What exactly are the ill-
Line effects of this demographic isolation The most extreme geographic segregation
(5) is unique to black Americans and apparently unrelated to economic status and
not explained by preferences for the residence, thus strongly suggesting the
persistence of racial discrimination. In contrast to poor whites, who typically
live dispersed among better-off families, poor blacks, because of residential
segregation, are concentrated in poor neighborhoods. As a result, residential
(10) segregation contributes to the problems of these areas, including high
concentrations of poverty, educational failure, unemployment, extramarital
parenthood, crime, and high mortality. In addition, the increasing importance
of suburbs as centers for commerce and habitation has drained resources from
inner cities and led to a cyclic decline in the political will to address poverty and
(15) urban decline, both of which disproportionately affect ethnic minorities.
A．a lack of political will within underprivileged communities to counter the economic effects of segregation
B．the diminished significance of urban black neighborhoods as economic and residential centers relatively to other areas of the city
C．the tendency of poor blacks to live among other poor minorities, unlike poor whites, who live dispersed among rich whites
D．the uniqueness of the geographic pattern in which black communities have developed in America, relative to other communities
E． a lack of resources within the urban black American communities to resist the forces which lead to segregation