职称英语综合类考试模拟试题3(编辑修改稿)内容摘要：
food. For North Americans, the hunt for jobs and improved social status also requires mobility. The nuclear family was not always the North American standard. In a more agrarian time, the small nuclear family was usually pare of a larger extended family. This might have included grandparents, mother and father, brothers and sisters, uncles. aunts, and cousins. In North America today, there is a dramatic rise in the number of singleparent households. Twice as many households in the United States are headed by divorced, separated or nevermarried in。阅读剩余 0%
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