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.
As it is used in the second paragraph of the passage, the word "migrant" means______.

选项 A、of visiting as a tourist
B、of moving officially from one place, job, thing, etc. to another
C、of moving from one place to another; changing one’s place of living, esp. for a limited period
D、of going from place to place, esp. to a long distant place; making a journey

答案C

解析 可根据本文的主题和句子结构并通过排除法确定该词含义。本文主要讲的是对美国穷人的不同分类方法。在第二段第六句中,“Migrant workers”与“American Indians”并列为主语,我们可以推断出“Migrant workers”一定是在美国工作的一类工人。选项A和D说的都是旅游方面,故不符合在美国的穷人划分的主题,应排除;选项B说的是由于工作、事情等原因从一个地方到另一个地方的正式迁居,与此句的意思发生冲突。唯有选项C符合文章内容。
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