Who are the poor in the United States? As of 1970, nearly two-thirds of the poor people were white. Although nonwhites make up o

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问题     Who are the poor in the United States? As of 1970, nearly two-thirds of the poor people were white. Although nonwhites make up only one-third of those classified as poor, this reflects a great overrepresentation (过分代表) of their number because the nonwhites made up less than 16 percent of the total population in 1970.
    Other categories (种类,类型) also help to define the poor. There are the aged poor. Almost one-fifth of all poor Americans are aged 65 or older. Another large segment of the poor in the United States is found in rural areas. Nearly one-fourth of all people living on farms in 1970 were classified as poor. Migrant workers and American Indians are included as part of the rural poor. But the greatest number of poor Americans is found in the cities. More than one-half of all single individuals whose income was below $ 3 000 in 1970 lived in urban areas, as did one-half of all four-person families with incomes below $ 6 000.
    Government officials have found it important to define who the poor are because each group has different needs. Different approaches are needed to help solve the problems of the poor.
Which of the following best states the central idea of the passage?

选项 A、Poverty is the greatest problem facing the United States today.
B、The American economy is the major reason that there are so many poor.
C、Poverty is largely the result of ineffective government policies.
D、The poor cannot be said to be one uniform group.

答案D

解析 本文主要讲述了美国穷人的划分方法。第一段是以白人和非白人的方法划分美国穷人;第二段以另外一些分类的标准划分美国穷人;第三段说明对穷人进行不同群体划分的意义。由此我们可以看出本文的主要意思是:穷人不能被说成是一个统一的群体。
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