The stages of sleep take on ____ - 试题答案网问答

第1题

Which of the following is the main idea of the passage？ ________.A) Evolution has e

Which of the following is the main idea of the passage？ ________.

A) Evolution has equipped all creatures with a regular pattern of sleeping and waking.

B) The study of sleep is an important part of the evolutionary theory.

C) Sleeping patterns must be taken into consideration in the designing of robots.

D) The sleeping pattern of a living creature is determined by the food it eats.

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第2题

SleepSleep is part of a person's daily activity cycle. There are several different stages

Sleep

Sleep is part of a person's daily activity cycle. There are several different stages of sleep, and they too occur in cycles. If you are an average sleeper, your sleep cycle is as follows. When you first drift off into slumber, your eyes will roll about a bit, your temperature will drop slightly, your muscles will relax, and your breathing will slow and become quite regular. Your brain waves slow down a bit too, with the alpha rhythm of rather fast waves predominating for the first few minutes. This is called stage 1 sleep. For the next half hour or so, as you relax more and more, you will drift down through stage 2 and stage 3 sleep. The lower your stage of sleep, the slower your brain waves will be. Then about 40 to 60 minutes after you lose consciousness you will have reached the deepest sleep of all. Your brain waves will show the large slow waves that are known as the delta rhythm. This is stage 4 sleep. You do not remain at this deep fourth stage all night long, but instead about 80 minutes after you fall into slumber, your brain activity level will increase again slightly. The delta rhythm will disappear, to be replaced by the activity pattern of brain waves. Your eyes will begin to dart around under your closed eyelids as if you were looking at something occurring in front of you. This period of rapid eye movement lasts for some 8 to 15 minutes and is called REM sleep. It is during REM sleep period, your body will soon relax again, your breathing will grow slow and regular once more, and you will slip gently back from stage 1 to stage 4 sleep-only to rise once again to the surface of near consciousness some 80 minutes later.

Every stage of sleep occur in cycles.

A．Right

B．Wrong

C．Not mentioned

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第3题

根据材料请回答 36～40 题 SleepSleep is part of your daily activity cycle, but there are

根据材料请回答 36～40 题

Sleep

Sleep is part of your daily activity cycle, but there are several differenttypes or stages of sleep and they too occur in cycles.If you are an average sleeper, your sleep cycle will go something like this： When you first drift off into sleep your eyes will roll about a bit, your temperature will drop slightly, your muscles will relax, and your breathing will slow and become quite regular.Your brain waves slow down a bit too.This is called Stage 1 sleep.

For the next half hour or so, as you relax more and more, you will drift down through Stage 2 and Stage 3 sleep.The lower your stage of sleep, the slower your brain waves will be.Then, about 40-60 minutes after you lose consciousness, you will have reached the deepest sleep of all.Your brain waves will show the delta rhythm.This is Stage 4 sleep.

You may think that you stay at this deep fourth stage all the rest of the night, but that turns out not to be the case.Instead, about 80 minutes after you fall into sleep your activity cycle wilt increase slightly.The delta rhythm will disappear, to be replaced by the activity pattern of brain waves.Your eyes will begin to move around under your closed eyelids as if you were looking at something occurring in front of you.This period of Rapid Eye Movements lasts for some 8-15 minutes and is called REM sleep.During both light and deep sleep, the muscles in your body are relaxed but capable of movement.However, as you slip into REM sleep, a very odd thing occurs.Most of the voluntary muscles(随意肌)in your body become paralyzed(麻痹).Although your brain shows very rapid bursts of neural activity during REM sleep, your body is incapable of moving.

第 36 题 The lower the stage of sleep

A．the greater the alpha waves will be

B．the slower the brain waves will appear

C．the slower the activity pattern of the brain

D．the deeper the sleeper gets to unconsciousness

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第4题

Part V Cloze （15 minutes)Directions:There are 20 blanks in the following passage. For each

Part V Cloze (15 minutes)

Directions: There are 20 blanks in the following passage. For each blank there are four choices marked A), B), C) and D) on the right side of the paper. You should choose the ONE that best fits into the passage. Then mark the corresponding letter on Answer Sheet 2 with a single line through the centre.

Do you wake up every day feeling too tired, or even upset？ If so, then a new alarm clock could be just for you.

The clock, called SleepSmart, measures your sleep cycle, and waits __67__ you to be in your lightest phase of sleep __68__ rousing you. Its makers say that should __69__ you wake up feeling refreshed every morning.

As you sleep you pass __70__ a sequence of sleep states—light sleep, deep sleep and REM (rapid eye movement) sleep—that __71__ approximately every 90 minutes. The point in that cycle at which you wake can __72__ how you feel later, and may __73__ have a greater impact than how much or little you have slept. Being roused during a light phase __74__ you are more likely to wake up energetic.

SleepSmart __75__ the distinct pattern of brain waves __76__ during each phase of sleep, via a headband equipped __77__ electrodes (电极) and a microprocessor. This measures the electrical activity of the wearer’s brain, in much the __78__ way as some machines used for medical and research __79__, and communicates wirelessly with a clock unit near the bed. You __80__ the clock with the latest time at __81__ you want to be wakened, and it __82__ duly (适时地) wakes you during the last light sleep phase before that.

The __83__ was invented by a group of students at Brown University in Rhode Island __84__ a friend complained of waking up tired and performing poorly on a test. “__85__ sleep-deprived people ourselves, we started thinking of __86__ to do about it,” says Eric Shashoua, a recent college graduate and now chief executive officer of Axon Sleep Research Laboratories, a company created by the students to develop their idea.

67.

67. A) beside

B) near

C) for

D) around

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第5题

阅读：Sleep is part of a person's daily activity cycle. There are several different stages of sleep

Questions 26 to 30 are based on the following passage:

Sleep is part of a person's daily activity cycle. There are several different stages of sleep, and they too occur in cycles. If you are an average sleeper,　your sleep cycle is as follows. When you first drift off into slumber (安睡), your eyes will roll about a bit, your temperature will drop slightly, your muscles will relax, and your breathing were slow and become quite regular. Your brain waves slow down a bit too, with the alpha rhythm of rather fast waves predominating for the first few minutes. This is called stage 1 sleep. For　the next half hour or so, as you relax more and more, you will drift down through stage 2 and stage 3 sleep. The lower your stage of sleep, the slower　your brain waves will be. Then about 40 to 60 minutes after you lose consciousness you will have reached the deepest sleep of all. Your brain waves will show the large slow waves that are known as the delta rhythm. This is stage 4 sleep.

You do not remain at this deep fourth stage all night long, but instead about 80 minutes after you fall into slumber, your brain activity level will increase again slightly. The delta rhythm will disappear, to be replaced by the　activity pattern of brain waves. Your eyes will begin to dart around under your closed eyelids (眼皮) as if you were looking at something occurring in　front of you. This period of rapid eye movement lasts for some 8 to 15 minutes　and is called REM sleep. It is during REM sleep period, your body will soon relax again, your breathing will grow slow and regular once more, and you will slip gently back from stage 1 to stage 4 sleep — only to rise once again to the surface of near consciousness some 80 minutes later.

26.The stages of sleep take on ____.

A) an irregular aspect. B) a regular aspect C) a punctual aspect D) a similar aspect

27.Stage 4 sleep lasts ____.

A) about 80 minutes

B) about 40 60 minutes

C) about 30 munutes

D) about 20 40 minutes

28.The brain waves are the slowest during ____.

A) stage 1 C) stage 4 B) stage 2 and stage 3 D) REM sleep

29.In the second paragraph the word “dart” means ____.

A) glare B) move rapidly or suddenly C) stop moving D) gaze

30.One of the features of REM sleep is that ____.

A) there are large slow waves, though rapid for the first few minutes

B) you have the deepest sleep

C) there are no brain waves

D) the brain waves are a little fast and the brain becomes a little active

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第6题

根据下列材料，请回答题SleepSleep is part of a person’s daily activity cycle．There are sever

根据下列材料，请回答题

Sleep

Sleep is part of a person’s daily activity cycle．There are several different stages of sleep．And they too occur in cycles_____（46）When you first drift off into slumber，your eyes will roll about a bit，your temperature will drop slightly，your muscles will relax，and your breathing will slow and become quite regular．Your brain waves slow down a bit t00，with the alpha rhythm of rather fast waves predominating for the first few minutes_____ （47）For the next half hour or so，as you relax more and more，you will drift down through stage 2 and stage 3 sleep．_____ （48）Then about 40 to 60 minutes after You lose consciousness you will have reached the deepest sleep of all．Your brain waves will show the large slow waves that are known as the delta rhythm．

This is stage 4 sleep．You do not remain at this deep fourth stage all night long．but instead about 80 minutes after you fall into slumber，your brain activity level will increase again slightly．_____ （49）Your eyes will begin to dart around under your closed eyelids as if you were l00-king at something occurring in front of you _____ （50）It is during REM sleep period，your body will soon relax again，your breathing will grow slow and regular once more，and you will slip gently back from stage l to stage 4 sleep—only to rise once again to the surface of near consciousness some 80 minutes later．

回答（46）题查看材料

A.The delta rhythm will disappear，to be replaced by the activity pattern of brain waves．

B.If you are an average sleeper，your sleep cycle is as follows．

C.In stage 4 sleep people tend to dream．

D.The lower your stage of sleep，the slower your brain waves will be．

E.This period of rapid eye movement lasts for some 8 to 1 5 minutes and is called REM sleep．

F.This is called stage l sleep．

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第7题

听力原文：A new report says an estimated 50 million to 70 million Americans have sleep prob

lems. It says ninny more are suffering from lack of sleep.

A group of sleep research organizations asked the Institute of Medicine to study the problem. The institute is part of America's National Academy of Sciences. The study examined why we need sleep, the effects of sleep loss and other sleep dimmers. A fourteen-member committee carried out the study. The Institute of Medicine reported their findings earlier this month. The report says American businesses lose more than 100,000 million dollars a year because of tired workers. Some employees are too tired to report for work. They have accidents or are less productive at work. Other costs included increased visits to doctors.

Many experts say a good amount of sleep is as important to health as diet end exercise. They say most people need 7 to 9 hours of sleep each night. Less than that can interfere with mental and physical abilities. It can lead to more serious problems, including severe sleeplessness.

Researchers involved in the study axe suggesting a number of steps to help prevent sleep disorders. They suggest a campaign to inform. the public about the problem. They want increased education and training among health care workers. And they are calling for new technology to identify and care sleep problems.

Which of the following problems was not mentioned in the study？

(30)

A．The reason that people need sleep.

B．The results of sleep loss.

C．The effects of oversleeping.

D．Different kinds of sleep disorders.

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第8题

One fact was clearly demonstrated by the early sleep researchers: one part of the night is

not just like another. As scientists began to compare the records of volunteers during the 1950s, they observed that human sleep follows a rhythmic schedule. They noted that not only was this schedule much the same in healthy persons of the same age with similar habits but, from night to night, each individual had an EEG record almost as consistent as a signature.

Sleep and wakefulness, once considered to be the light and dark of consciousness, no longer seem to differ so sharply. To sleep does not mean to drown in an ocean of darkness. Actually, sleep is not a unitary state; it involves many shades or degree of detachment from the surrounding world. While sleep may feel like a blanket of darkness punctuated by dreams—a time when the mind is asleep—nothing could be less true. All night long a person drifts down and up through different levels of consciousness, as if on waves. With laboratory methods, researchers have been able to chart the typical stages of the journey into sleep.

The journey starts while the subject is still awake but beginning to relax. His brain waves, which have been low, rapid, and irregular, begin to show a new pattern. This new pattern, which is known as alpha rhythm, is an even electrical pulsation of about nine to 12 cycles per second. Most people do not know what the alpha state feels like, but during the last few years researchers have been able to teach subjects how to recognize and control their alpha rhythm.

When their EEG shows an alpha rhythm, the subjects are notified, either by a sound or by the appearance of a color on a screen. Because the alpha state tends to be pleasant and relaxed, the ability to sustain it can help tense people ease their passage into sleep. A moment of tension, a loud noise, an attempt to solve a problem, however, and the alpha rhythm may vanish.

As the subject passes through the gates of the unconsciousness, his alpha waves grow smaller, and his eyes roll very slowly. For a moment, he may wake up during this early part of the descent, alerted by a sudden spasm that causes his body to jerk. Like the brain waves, this spasm is a sign of neural changes within. Known as the myoclonic jerk, it is caused by a brief burst of activity in the brain. Although it is related to epileptic seizures, the myoclonic jerk is normal in all human sleep. It is gone in a fraction of a second, after which descent continues. The subject has not felt the peculiar transformation, but now he is said to be truly asleep.

This passage states that a person is really asleep only

A．after dreaming has passed.

B．when his EEG reveals no alpha rhythm.

C．when his EEG begins to show an alpha rhythm.

D．after the completion of his alpha rhythm decline.

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第9题

New measurements taken from sleeping people explain,at least in part,why dreams tend

to have such bizarre but vivid storylines.The findings deal a blow to the Freudian interpretation of dreams but leave open the possibility that some useful personal meaning can be extracted from them.The main purpose of dreams,however,the authors of the new study believe,is to test whether the brain has had enough sleep and,if so,to wake it up.The new results show that in sleep,the frontal lobes of the brain are shut down.In the absence of activity in these lobes,which integrate other information and make sense of the outside world,the sleeping brain's images are driven by its emotional centers.The content of these dreams may be vivid and gripping but lacks coherence.The new results are consistent with the theory that memories are consolidated during sleep.From the pattern of activity that was recorded,"it seems that memories already in the system are being read out and filed in terms of their emotional salience,with is an extremely interesting idea,"said Dr.J.Allan Hobson of Harvard Medical School.The new measurements were made by applying the technique known as PET scanning to sleeping subjects.The biologists focused on the two forms of sleep,known as slow-wave sleep and REM sleep.REM sleep,so named because of the rapid eyeball movements that occur then,takes palce about four times during the night and is the phase from which the most vivid dreams are recalled.

问题：Accoding to this study,the purpose of the dreams is to ()

A、test if the brain has had enough sleep

B、show the dreams bizarre but vivid storylines

C、prove the correctness of the Freudian interpretation of dreams

D、extract some useful personal meanings from the dreams

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第10题

People who do sleep research tell us that a person is a sort of "information processor." W

e have two ways to use the information we get each day.

The first process is used when we are awake. It takes place in the left side of the brain. It is this process that makes us do the things we have to do. It lets us put aside those things that are not a real part of our day's work.

The second process happens in the fight side of the brain. This process takes all those bits of information we did not use in the day. It turns them to dreams at night. "This process is our regular night shift work," says physiologist Rosalind Cartwright from the University of Illinois. "At night we put together the bits and pieces of our day, so that we are ready to face the next day."

We have several dreams each night of our lives. About ten minutes after we fall asleep, we begin to go through four stages of sleep. Our sleep gets deeper and deeper. And it gets harder for us to wake up. At the end of the fourth and deepest stage, the process changes. We begin to come back up again through the same stages. The coming back up is called "rousal" time. It lasts about ten to twenty minutes. We do not wake in this stage. Instead, we go through a stage of vivid dreams.

In this stage we do not toss or turn or even snore. The brain temperature and the blood flow get much higher. The body goes as limp as a rag doll. And the large muscles in the arms, legs, and trunk go stiff. The eyeballs begin to move back and forth very quickly, even though the eyes are closed. This is called the stage of Rapid Eye Movement or the REM stage.

We go into the REM stage about six times a night. That's once every hour and a half or so. This hour and a half pattern is part of many things in our lives. Lots of body functions happen every hour and a half. Things like stomach contractions (收缩) and hormone secretions (分泌).

Why do we dream？ Research tells us that dreams can help us with our problems. When we have big problems in the day, we may spend more time in REM sleep at night, because dreams can bring answers to problems.

Sleep research reveals ______.

A．people do odd things in the first stage of sleep

B．the left side of our brain is responsible for the work that is necessary to deal with during the day

C．the mysteries of dreams have just been brought to light

D．the function of the right side of our brain is to classify the information we fail to handle in the daytime

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第11题

When you first drift off into slumber, your eyes will roll about a bit, your temperature w

ill drop slightly, your muscles will relax, and your breathing will become quite regular. Your brain waves slow down a bit, with the alpha rhythm predominating for the first few minutes. This is the first stage of sleep. For the next 30 minutes or so, you will drift down through Stage 2 and Stage 3. The lower your stage of sleep, the slower your brain waves will be. About 40-60 minutes after you lose consciousness, you will reach the last stage. Your brain waves will show the delta rhythm. You may think that you stay at this deep stage all the rest of the night, but that turns out not to be the case. About 80 minutes after you fall into slumber, your activity cycle will increase slightly. The delta rhythm will disappear, to be replaced by the activity pattern of brain waves. Your eyes will begin to dart around under your closed eyelids. This period of Rapid Eye Movements lasts for 8-15 minutes and is called REM sleep.

During both light and deep sleep, the muscles in your body are relaxed but capable of movement. As you slip into REM sleep, a very odd thing occurs -- most of the voluntary muscles in your body become paralyzed. Although your brain shows very rapid bursts of neural activity during REM sleep, your body is incapable of moving. REM sleep is accompanied by extensive muscular inhibition.

On the part of an average sleeper, there______of sleep in cycles.

A．is one stage

B．are two stages

C．are six stages

D．are four stages

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