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  3. There are more than 300 millions of us in the United States. and sometimes it seems like we’re all friends on Face book. But the

There are more than 300 millions of us in the United States. and sometimes it seems like we’re all friends on Face book. But the

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问题      There are more than 300 millions of us in the United States. and sometimes it seems like we’re all friends on Face book. But the sad truth is that Americans are lonelier than ever. Between 1985 and 2004, the number of people who said there was no one with whom they discussed important matters tripled, to 25 percent, according to Duke University researchers. Unfortunately, as a new study linking women to increased risk of heart disease shows, all this loneliness can be detrimental to our health.
     The bad news doesn’t just affect women. Social isolation in all adults has been linked to a series of physical and mental ailments, including sleep disorders, high blood pressure, and an increased risk of depression and suicide. How lonely you feel today actually predicts how well you’ll sleep tonight and how depressed you’ll feel a year from now, says John T. Cacioppo, a neuroscientist at the University of Chicago and coauthor of Loneliness: Human Nature and the Need .for Social Connection. Studies have shown that loneliness can cause stress levels to rise and can weaken the immune system. Lonely people also tend to have less healthy lifestyles, drinking more alcohol, eating more fattening food, and exercising less than those who are not lonely.
     Though more Americans than ever are living alone (25 percent of U.S. households, up from 7 percent in 1940), the connection between single-living and loneliness is in fact quite weak. "Some of the most profound loneliness can happen when other people are present," says Harry Reis, professor of psychology at the University of Rochester. Take college freshmen: even though they’re surrounded by people almost all the time, many feel incredibly isolated during the first quarter of the school year with their friends and family members far away, Cacioppo says. Studies have shown that how lonely freshmen will feel can be predicted by how many miles they are from home. By the second quarter, however, most freshmen have found social replacements for their high-school friends.  Unfortunately, as we age, it becomes more difficult to recreate those social relationships. And that can be a big problem as America becomes a more transient society, with and increasing number of Americans who say that they’re willing to move away from home for a job.
     Loneliness can be relative: it has been defined as an aversive (反感的) emotional response to a perceived discrepancy between a person’s desired levels of social interaction and the contact they’re actually receiving. People tend to measure themselves against others, feeling particularly alone in communities where social connection is the norm. That’s why collectivist cultures, like those in Southern Europe, have higher levels of loneliness than individualist cultures, Cacioppo says. For the same reason, isolated individuals feel most acutely alone on holidays like Christmas Eve or Thanksgiving, when most people are surrounded by family and friends.
From the first paragraph, we can learn the problem with America is that ______.
选项
答案they are lonelier than ever
解析 根据题干关键词the first paragraph定位到原文第一段第二句But the sad truth is that Americans are lonelier than ever．可知美国人比以前感到更加的孤独寂寞。
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