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Questions 14-17 are based on the following passage about loneilness． What do psychologists think of long-term loneliness

A．It’s nothing serious．
B．It’s quite dangerous．
C．It’s worthy of attention．
D．It’s easily understandable．

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单项选择题

单项选择题

Questions 14-17 are based on the following passage about loneilness． What do psychologists think of long-term loneliness 您的浏览器不支持 audio 元素。