题目内容：

“Dreams may be more important than sleep. We all need dreams.” Some scientists say.

Dreams take up about one quarter of our sleeping time. People have several dreams each night. Dreams are like short films. They are usually in color. Some dreams are like old films. They come to us over again. That may be because the dreamer is worried about something. Dreaming may be a way of trying to find an answer.

Some people get new ideas about their work from dreams. They may think about their work all day. These ideas can carry over into dreams.

Sometimes we wake up with a good feeling from a dream. But often we can’t remember the dream. Dreams can go away quickly.

Too much dreaming can be harmful. The more we sleep, the longer we dream. The mind is hard at work when we dream. That is why we may have a long sleep and still wake up tired.

1.Dreams are usually_________.

A. very long    B. in color    C. about work    D. very sad

2.Why do some people often dream about their work?

A. Because they are tired in the daytime.

B. Because they are not interested in their work.

C. Because they may think about their work all day.

D. Because they have too much work to do.

3.The underlined（划线） word “harmful” means “________”in the article.

A. healthy    B. bad    C. helpful    D. useful

4.Which of the following is NOT true?

A. Dreams may be helpful to people sometimes.

B. Too much dreaming may be bad for people.

C. People always remember their dreams quickly.

D. People sometimes wake up tired if they have a lot of dreams while sleeping.

5.The story mainly tells us___________.

A. the difference between dream and sleeping

B. people like dreaming

C. what dreams are

D. we always remember dreams