阅读理解。
We all dream although we remember only a few of our dreams. Some people train themselves to
remember their dreams. As soon as they wake up, they record what their dreams were about.
Scientists believe that we have different kinds of sleep. One kind is called R.E.M. R.E.M. stands
for rapid eye movement. During this kind of sleep our eyes move quickly, even though they are closed.
Although we are asleep, there are a lot of brain activities. We probably have dreams at this time.
Sometimes people talk in their sleep. In these dreams the dreamer is usually unhappy or worried
about something. The worst of the dreams are so frightening that we call them nightmares. In a nightmare
we often dream that we are being closed or that we are trapped in some way.
Scientists or others have written books about the meanings of dreams. The most famous of these
scientists was Sigmund Freud who wrote a hundred years ago. He suggested different meanings to
certain kinds of dreams. It is possible, however, that every dream has a special meaning only for the
person who dreams it, and that this dream about something is in that person's life.
1. How can we tell if someone is having an R.E.M. dream?
A. They are talking in their sleep.
B. They are worried about something.
C. Their eyes are moving quickly.
D. Their eyes are moving slowly.
2. What is the main idea of Paragraph Four?
A. Bad Dreams.
B. The meaning of dreams.
C. People and their dreams.
D. R.E.M. and sleep and dreams.
