The spatial distribution of different racial and ethnic populations demonstrates that segregation persists in virtually all

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问题         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-
    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.

选项 A、hypothesizing about a set of circumstances
B、chronicling the emergence of a phenomenon
C、comparing two conflicting points of view
D、cataloging the cause and effects of a phenomenon
E、arguing the necessity of solving a problem

答案D

解析
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