单项选择题

The topic of the 4th paragraph is that ______.

A．one problem of loneliness is a person's social contacts
B．we depend on various people for different reasons
C．lonely people don’t have many social problems
D．lonely people don’t have many friends

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单项选择题

It in the last sentence of the second paragraph refers to ______.

A．temporary loneliness
B．situational loneliness
C．a new place
D．sleeplessness

单项选择题

What is the best title for the passage

A．Three Kinds of Loneliness.
B．Loneliness and Diseases.
C．Loneliness and Social Contacts.
D．Chronic Loneliness.