在生活、工作和學習中，大家都嘗試過寫作文吧，作文是從內部言語向外部言語的過渡，即從經過壓縮的'簡要的、自己能明白的語言，向開展的、具有規範語法結構的、能為他人所理解的外部語言形式的轉化。一篇什麼樣的作文才能稱之為優秀作文呢？下面是小編整理的英語四級作文：特殊實驗室-A Unique Laboratory，僅供參考，歡迎大家閱讀。
A unique laboratory at the university of chicago is busy only at night. It is a dream laboratory where researchers are at work studying r findings have showed that everyone dreams from three to seven times at night although in ordinary life a person may remember none or only one of his dreams.
While the subjects——usually students——sleep, special machines record their brain waves and eye movements as well as the body movements that signal the end of dream. Surprisingly, all subjects sleep soundly.
Observers report that a person usually figets before a dream. Once the dream has started, his body relaes and his eyes become more active, as if the curtain had gone up on a show. As soon as the machines show that the dream is over, a buzzer wakes the sits up, records his dream and goes back to sleep, perhaps o dream some more.
Researchers have found that if the dreamer is wakened immediately after the dream, he can usually bring back to his mind the entire dream. If he is allowed to sleep even five more minutes, his memory of the dream will have gone.
