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1、英语四级阅读练习题原文：You do not remain at thi deep fourth tage all night long, but intead about 80 minute after you fall into lumber, your brain activity level will increae again lightly. The delta rhythm will diappear, to be replaced by theactivity pattern of brain wave. Your eye will begin to dart around u
2、nder your cloed eyelid (眼皮) a if you were looking at omething occurring infront of you. Thi period of rapid eye movement lat for ome 8 to 15 minuteand i called REM leep. It i during REM leep period, your body will oon rela某 again, your breathing will grow low and regular once more, and you will lip
3、gently back from tage 1 to tage 4 leep only to rie once again to the urface of near concioune ome 80 minute later.英语四级阅读练习题目：26.The tage of leep take on _.A) an irregular apect. B) a regular apect C) a punctual apect D) a imilar apect27.Stage 4 leep lat _.A) about 80 minuteB) about 40 60 minuteC) ab
4、out 30 munuteD) about 20 40 minute28.The brain wave are the lowet during _.A) tage 1 C) tage 4 B) tage 2 and tage 3 D) REM leep29.In the econd paragraph the word dart mean _.A) glare B) move rapidly or uddenly C) top moving D) gaze30.One of the feature of REM leep i that _.A) there are large low wav
5、e, though rapid for the firt few minuteB) you have the deepet leepC) there are no brain wave：26.答案B。文章的第二句告诉我们睡眠的不同阶段是周期性发生的，故睡眠的各阶段呈现规则的一面。27.答案D。根据文章可知一个睡眠周期大约是 80分钟，而tage 4 leep是睡眠的最后阶段，它发生在入睡后大约40至60分钟时，据此可推出tage 4 leep持续20至40分钟。28.答案C。文章第一段倒数第四句说睡得越深，脑电波就越慢，而 tage 4 leep 是睡得最深的，故脑电波也是最慢的。29.答案B。dart的后文说眼睛好像看着发生在眼前的事，又说这种快速移动眼睛的阶段叫 REM leep，据此可知dart意为move quickly or uddenly(飞快地移动)。glare怒目而视;gaze凝视。30.答案D。从第二段第一、二句可知大脑运动水平会再度略有提高，而 delta波消失， 取代的是脑电波运动图形。据此可知脑电波变得快了一点，大脑活跃些。而大的缓波和睡得 最深是 tage 4 leep的特征，rapid for the firt few minute是tage 1 leep的特征，整个睡眠阶段都是有脑电波的，故A，B和C皆错。