填空题 Dreams are a product of the sleeper's mind. They include events and feelings that he has experienced. Most dreams are related to events of the day before the dream and strong wishes of the dreamer. Many minor incidents of the hours before sleep appear in dreams. Few events more than two days old turn up. 1 Events in the sleeper's surrounding, a loud noise, for example, may become part of a dream, but they do not cause dreams.

• A. Psychiatrists (精神病医生) often use material from a patient's dreams to help the person understand himself better.
• B. Deep wishes or fears - especially those held since childhood--often appear in dreams, and many dreams fulfill such wishes.
• C. Most dreams occur in color, but persons who have been blind since birth do not see at all in dreams.
• D. Dreaming may help maintain good learning ability, memory, and emotional adjustment.
• E. In most dreams, the dreamer cannot control what happens to him.
• F. Dream events are imaginary, but they are related to real experiences and needs in the dreamer's lif