Most people sometimes feel lonely,but it usually only lasts

Most people sometimes feel lonely,but it usually only lasts between minutes and a few hours.This kind of loneliness is not serious.In fact,it is quite normal.For some people,though,loneliness can last for years.Now researchers say there are three different types of loneliness.
The first kind of loneliness is temporary.This is the most common type.It usually disappears quickly and does not require any special attention.The second kind,situational loneliness,is a natural result of a particular situation --- for example,a family problem,the death of a loved one,or moving to a new place.Although this kind of loneliness can cause physical problems,such as headaches and sleeplessness,it usually does not last for more than a year.
The third kind of loneliness is the most severe.Unlike the second type,chronic loneliness usually lasts more than two years and has no specific cause.People who experience habitual loneliness have the problem socializing and becoming close to others.Unfortunately,many chronically lonely people think there is little or nothing they can do to improve their condition.Psychologists agree that one important factor in loneliness is a person’s social contacts,e.g.friends,family members,co-workers,etc.We depend on various people for different reasons.For instance,our families give us emotional support,our parents and teachers give us guidance,and our friends share similar interests and activities with us.However,psychologists have found that,though lonely people may have many social contacts,they sometimes feel they should have more.They question their own popularity.
Psychologists are trying to find ways to help habitually lonely people for two reasons:they are unhappy and unable to socialize and there is a connection between chronic loneliness and serious illness such as heart diseases.While temporary and situational loneliness can ba a normal,healthy part of life,chronic loneliness can be a very sad,and sometimes dangerous,condition.
6.What can we learn from the passage about temporary loneliness?
A.It requires special attention.
B.It is very common and usually disappears quickly.
C.It is serious but it usually disappears quickly.
D.It is as serious as chronic loneliness.
7.Though lonely people may have many social contacts,_______.
A.they want to socialize with more people
B.they still need others to guide them
C.they still need others to support them emotionally
D.they want to ask more questions about their popularity
8.What kind of loneliness can cause serious illness?
A.Temporary loneliness.
B.Situational loneliness.
C.Chronic loneliness.
D.Short-term loneliness.

科普文章,条理还是很清楚的……
B6我们可以从这篇文章关于短期孤独得知些什么
A它需要特殊关注
B非常普遍通常消失很快
C很严重但消失的很快
D和长期孤单一样严重
（第2段第一句就能说明只有B是对的）
A7尽管孤独的人或许有许多社会接触,
A他们想和更多人交际
B他们仍旧需要别人引导
C他们仍旧需要别人情感支持
D他们想问很多问题关于他们的自身特点
（从第3段,可以排除BC,不是主要因素,D为什么觉得不合适 They question their own popularity.最后一句话的意思应该是,他们质疑他们自身的特点,而不是想到处去提问）
所以这题最难,没办法
C8哪种孤独可以导致严重疾病?
（最后一段告诉我们AB是生活中正常而又健康的一部分,D提都没提过,后2段都在讲C的危害,所以只有C是正确的）
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