人为什么会做梦?英文回答,50词左右

There are two different schools of dream-explanation.
The physiological theory centers upon how our brains,function during the REM phase of sleep.
Psychological theorists focus upon our thoughts and emotions,and speculate that dreams deal with immediate concerns in our lives,like unfinished business from the day,or concerns we are incapable of handling during the day.

英文回答的 200分起

是会有自己的意识吧