42 Dreams
A special laboratory at the University of Chicago is busy only at night. It is a dream laboratory where researchers are at work studying dreamers. Their findings have shown that everyone dreams from three to seven times a night, although in ordinary life a person may remember none or only one of his dreams．
While the subjects，usually students，are asleep，special machines record their brain waves and eye movements as well as the body movements that signal the end of a dream．Surprisingly，all subjects sleep very well．
Observers report that a person usually fidgets before a dream．Once the dream has started，his body relaxes and his eyes become more active as if the curtain has
gone up on a show．As soon as the machine shows that the dream is over, a buzzer wakens the sleeper，He sits up，records his dream, and goes back to sleep，perhaps to dream some more．
Researchers have found that if the dreamer is wakened immediately after his 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.
梦
芝加哥大学有一间特殊的实验室，只在晚上才工作。它是学者们研究人做梦的实验室。他们的研究结果显示，每个人夜间会做3-7次梦虽然在日常生活中人们只记住其中的一个甚至一个也记不住。
学生们通常充当受试验者，当他们睡觉时，有特殊的仪器记录他们的脑电波及眼睛的运动情况，同时记录下梦境结束时身体的运动反应。令人惊奇的是，受试验者都睡得非常好。
观察者说人在做梦前通常不安。一旦开始做梦，全身放松，眼睛运动十分活跃，好像演出时大幕拉开一样。当机器一显示做梦结束， 擎鸣器就会将睡眠者叫醒。他坐起来，写下他的梦，然后继续睡，也许又做更多的梦。
研究者发现如果一个人在做完梦之后马上被叫醒，他通常会记 起整个梦的内容。但如果让他多睡哪怕只有5分钟，他就会把梦忘得一干二净。
参考译文
词汇：
Laboratory 实验室 researcher 调查者
Subject 受实验者 fidget 烦躁不安
Relax 使松弛 buzzer 蜂鸣器
Entire 全部的
I．听全文录音，选择正确答案
1 ．Researchers of the dream lab find that
A. everyone dreams less than 3 times a night
B ．a baby often dreams more than an adult
C ．sometimes a person can’t remember his dreams
D ．a person can only sleep well when he dreams
2 ．Observers report that once a dream has started，
A ．the person’s body relaxes
B .the person becomes nervous
C ．the person’s eyes keep still
D .the person moves now and then
3 ．Subjects of the lab usually are
A. clerks B. athletes
C. housewives D. students
II．听录音，补全下列段落
Observers 1 that a person usually fidgets 2 a dream． Once the dream has 3 ，his body 4 and his eyes become More 5 as if the curtain has gone up on a 6 . As soon as the machine shows that the dream is 7 ，a buzzer 8 the sleeper. He sits up， 9 his dream，and goes back to 10 ，perhaps to dream some more．
答案:
I．1.C 2．A 3．D
II．1．report 2. before 3. started 4. relaxes 5. active
6. show 7. over 8. wakens 9. records 10．sleep
