题目内容：

    Almost all researches in sleep explain that nightmares are a reaction to negative experiences that happen during waking hours. However, some of them believe that nightmares do have some real benefits. One 2017 study, for example, found that frequent nightmare sufferers considered themselves as more empathetic (共鸣的). They also showed more of a tendency to unconsciously mirror other people through things like yawning. People who have constant nightmares also tend to think further outside the box on psychoanalysis tasks. Some other researches have found support for the idea that nightmares might be linked to creativity.

People seeking cure for nightmares were not necessarily more fearful or anxious, but rather had a general sensitivity (敏感) to all emotional experiences. Sensitivity is the driving force behind Intense (强烈的) dreams. Heightened sensitivity to threats or fear during the day results in bad dreams and nightmares, while heightened passion or excitement may result in more intense positive dream. And both these forms of dreams may feed back into waking life, perhaps increasing suffering after nightmares, or promoting (促进) social bonds and empathy (共鸣) after positive dreams.

The effects go further still. This sensitivity overflows over into perceptions and thoughts: people who have a lot of nightmares experience a dreamlike quality to their waking thoughts. And this kind of thinking seems to give them a creative advantage. For example, studies show that such people tend to have greater creative talent and artistic expression. And people who often have nightmares also tend to have more positive dreams than the average person.

The evidence points towards the idea that, rather than disturbing normal activity, people who are unfortunate in having a lot of nightmares also have a dreaming life that is at least as creative, positive and vivid as it can be distressing and frightening. What’s more, this imaginative richness is unlikely to be limited to sleep, but also is filled with waking thought and daydreams. Even after people wake up and shake off the nightmare, in other words, a mark of it stays behind, occupying them throughout the day.

1.What do most sleep researchers think of nightmares?

A.They have no advantages at all.

B.They make people more empathetic.

C.They can contribute to humans’ creativity.

D.They are a reflection of waking behavior.

2.How can nightmare sufferers probably stop nightmares in theory according to the text?

A.Be more fearful to anxious to nightmares.

B.Try to reduce sensitivity to threats or fear.

C.Avoid excitement as much as possible.

D.Promote social bonds and empathy.

3.What does the underlined word “perception” in Paragraph 3 mean?

A.Awareness. B.Content.

C.Relief. D.Determination.

4.What can be the best title for the text?

A.The Solution of Nightmares B.The Empathy of Nightmares

C.The Benefits of Nightmares D.The Tendency of Nightmares