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  3. Thirty years ago, anyone blaming loneliness for physical illness would have been laughed at. But as scientists studied different

Thirty years ago, anyone blaming loneliness for physical illness would have been laughed at. But as scientists studied different

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问题     Thirty years ago, anyone blaming loneliness for physical illness would have been laughed at. But as scientists studied different populations, loneliness kept emerging as a risk【B1】______In one study, California researchers followed 4 700【B2】______of Alameda County for ten years, starting in 1965. At first, the【B3】______reported their key sources of companionship and estimated the time they【B4】______each other. During the study, the people who reported the least social【B5】______died at nearly three times the rate of those reporting the most. The source of companionship didn’t matter, but time spent with others was【B6】______Since then, researchers have studied men, women, soldiers and students from countries all over the world. And the same【B7】______keeps emerging. Women who say they feel isolated go on to die of cancer at several times the expected rate. College students who report "strained and cold" relationships with their parents suffer【B8】______rates of hypertension(高血压)and heart disease decades later. Heart attack【B9】______who happen to live by themselves die at twice the rate of those who live with others. For those of us who are still healthy, the lesson should be obvious. It’s clear that reaching out to others can help out bodies thrive. It’s equally clear that we’re growing more isolated. In 1900, only 5% US households【B10】______one person living alone. The proportion reached 13% in 1960, and it stands at 25% today.
【B3】
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答案participants
解析 句意推断题。此处可以根据上下文的意思进行推测，上文中提到，加利福尼亚州的研究人员进行了一项研究，那么定冠词the后面应是这项研究的参与者或被调查者。结合录音填入participants，意为“参与者”。
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