2. 外语
  3. Americans’ circle of close confidants has shrunk dramatically in the past two decades but the number of people who say they【M1】_

Americans’ circle of close confidants has shrunk dramatically in the past two decades but the number of people who say they【M1】_

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问题     Americans’ circle of close confidants has shrunk dramatically
in the past two decades but the number of people who say they【M1】______
have no one with whom to discuss important matters has more
than doubled, according to a new study by sociologists at Duke
University and the University of Arizona " The evidence shows
that Americans have more confidants and those ties are also more【M2】______
family-based than they are used to be," said Lynn Smith-Lovin,【M3】______
Professor of Sociology at Duke University and one of the study’s
authors of Social Isolation in America: Changes in Core
Discussion Networks Over Two Decades.
    The study compared data from 1985 to 2004 and found which【M4】______
the mean number of people with whom Americans can discuss
matters important to them dropped by nearly one-third, from 2.94
people in 1985 to 2.08 in 2004. The study paints a picture of
Americans’ social contacts a "densely connected, close,【M5】______
homogeneous set of ties slowly closing in on themselves,【M6】______
becoming smaller, more tightly interconnected, more focusing on【M7】______
the very strong bonds of the nuclear family."
    That means less contacts created through clubs, neighbors and【M8】______
organizations outside the home—a phenomenon popularly known
as " bowling lonely," from the 2000 book of the same title by【M9】______
Robert D. Putnam. The researchers speculated that changes in
communities and families, such as the increase in a number of【M10】______
hours that family members spend at work and the influence of
Internet communication, may contribute to the decrease in the size
of close-knit circles of friends and relatives.
【M3】
选项
答案are一去掉are
解析 词汇错误。be used to表示“习惯于”，后接名词或动名词，used to表示“过去常常”，后接动词原形，此句要表达的意思是“和过去相比。现在美国人的朋友更倾向于以家庭关系为基础。”故此处用used to，符合上下文语义。
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