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When a dream happens, the right order of stages of sleep is ______.
A．2-3-4-1-2-3
B．1-2-3-4-3-2
C．1-2-3-4-1-2
D．3-4-1-2-3-4
答案
更多“When a dream happens, the right order of stages of sleep is ______.A．2-3-4-1-2-3B．1-2-3-4-”相关的问题
第1题
阅读材料，回答题。
When We Are Asleep
Everyone dreams, but some people never recall their dreams, or do so very rarely. Other people always wake up with vivid recollections (记忆 ) of their dreams, though they forget them very quickly. In an average night of eight hours&39;sleep, an average adult will dream for around one hundred minutes, probably having three to five dreams, each lasting from ten to thirty minutes.
Scientists can detect when someone is having a dream by using an instrument which measures the electrical waves in the brain. During dreaming, these waves move more quickly. Breathing and pulse rate also increase, and there are rapid eye movements under the lids, just as though the dreamer were really looking at moving objects. These signs of dreaming have been detected in all mammals (哺乳动物) studied, including dogs, monkeys, cats, and elephants, and also some birds and reptiles (爬行动物) .This period of sleep is called the "D" state for around 50% of their sleep; the period reduces to around 25% by the age of 10.
Dreams take the form. of stories, but they may be strange and with incidents not connected, which make little sense. Dreams are seldom without people in them and they are usually about people we know. One estimate says that two-thirds of the "cast" of our dream dramas are friends and relations. Vision seems an essential part of dreams, except for people blind from birth. Sound and touch senses are also often aroused, but smell and taste are not frequently involved. In "normal" dreams, the dreamer may be taking part, or be only an observer. But he or she cannot control what happens in the dream.
However, the dreamer does have control over one type of dream. This type of dream is called a "lucid"(清醒的) dream. Not everyone is a lucid dreamer. Some people are occasional lucid dreamers. Others can dream lucidly more or less all the time. In a lucid dream, the dreamer knows that he is dreaming.
Some people dream but cannot remember their dreams. 查看材料
A.Right
B.Wrong
C.Not mentioned
第2题
When We Are Asleep
Everyone dreams, but some people never recall their dreams, or do so very rarely. Other people always wake up with vivid recollections (记忆) of their dreams, though they forget them very quickly. In an average night of eight hours' sleep, an average adult will dream for around one hundred minutes, probably having three to five dreams, each lasting from ten to thirty minutes.
Scientists can detect when someone is having a dream by using an instrument which measures the electrical waves in the brain. During dreaming, these waves move more quickly. Breathing and pulse rate also increase, and there are rapid eye movements under the lids, just as though the dreamer were really looking at moving objects. These signs of dreaming have been detected in all mammals (哺乳动物) studied, including dogs, monkeys, cats, and elephants, and also some birds and reptiles (爬行动物). This period of sleep is called the “D” state for around 50% of their sleep; the period reduces to around 25% by the age of 10.
Dreams take the form. of stories, but they may be strange and with incidents not connected, which make little sense. Dreams are seldom without people in them and they are usually about people we know. One estimate says that two-thirds of the “cast” of our dream dramas are friends and relations. Vision seems an essential part of dreams, except for people blind from birth. Sound and touch are senses also often aroused, but smell and taste are not frequently involved. In “normal” dreams, the dreamer may be taking part, or be only an observer. But he or she cannot control what happens in the dream.
However, the dreamer does have control over one type of dream. This type of dream is called a “lucid”(清醒的) dream. Not everyone is a lucid dreamer. Some people are occasional lucid dreamers. Others can dream lucidly more or less all the time. In a lucid dream, the dreamer knows that he is dreaming.
Some people dream but cannot remember their dreams.
A．Right
B．Wrong
C．Not mentioned
第3题
If the covers have slipped off your bed, you may dream that______.
A．something comfortable happens to you
B．you are staying in freezing surroundings
C．some people arc making noise
D．you have nothing on at all
第4题
We can infer from the story that in the dream laboratory, ______.
A．dreams are recorded about five minutes after the end of each dream
B．if the dreamer is awoken immediately after his dream, he can usually recall the entire dream.
C．it is found that what happens during the day often affects what one dreams
D．dreams' contents are analyzed according to the brain waves recorded
第5题
Sleep
Sleep is one of those funny things about being a human being -- you just have' to do it. Have you ever wondered why？ And what about the crazy dreams, like the one where a bad per son is chasing you and you can't run or yell. Does that make any sense？
Characteristics of Sleep
When we see someone sleeping, we recognize the following characteristics:
If possible, the person will lie down to go to sleep.
The person's eyes are closed.
The person doesn't hear anything unless it is a loud noise.
The person breathes in a slow, rhythmic pattern.
The person's muscles are completely relaxed. If sitting up, the person may fall out of his or her chair as sleep deepens.
During sleep, the person occasionally rolls over or rearranges his or her body. This happens approximately once or twice an hour. This may be ,the body's way of making sure that no part of the body or skin has its circulation cut off for too long a period of time.
In addition to these outward signs, the heart slows down and the brain does some pretty funky things.
In other words, a sleeping person is unconscious to most things happening in the environment. The biggest difference between someone who is asleep and someone who has fainted or gone into a coma is the fact that a sleeping person can be aroused if the stimulus is strong enough. If you shake the person, yell loudly or flash a bright light, a sleeping person will wake up.
Who Sleeps？
Reptiles(爬行动物), birds and mammals(哺乳动物)all sleep. That is, they become unconscious to their surroundings for periods of time. Some fish and amphibians reduce their aware ness but do not ever become unconscious like the higher vertebrates do. Insects do not appear to sleep, although they may become inactive in daylight or darkness.
By studying brainwaves, it is known that reptiles do not dream. Birds dream a little. Mammals all dream' during sleep.
Different animals sleep in different ways. Some animals, like humans, prefer to sleep in one long session. Other animals like to sleep in many short bursts. Some Sleep at night, while others sleep during the day.
Sleep and the Brain
If you attach an electroencephalograph to a person's head, you can record the person's brainwave activity. An awake and relaxed person generates alpha waves, which are consistent oscillations at about 10 cycles per second. An alert person generates beta waves, which are a bout twice as fast.
During sleep, two slower patterns called theta waves and delta waves take over. Theta waves have oscillations in the range of 3.5 to 7 cycles per second, and delta waves have oscillations of less than 3. 5 cycles per second. As a person falls asleep and sleep deepens, the brain wave patterns slow down. A person deep in delta wave sleep is hardest to wake up.
REM Sleep
At several points during the night, something unexpected happens -- rapid eye movement(REM)sleep occurs. Most people experience three to five intervals of REM sleep per night, and brainwaves during this period speed up to awake levels. If you ever watch a person or a dog experiencing REM sleep, you will see their eyes flickering back and forth rapidly. In many dogs and some people, arms, legs and facial muscles will twitch during REM sleep. Periods of sleep other than REM sleep are known as NREM(non-REM)sleep.
REM sleep is when you dream. If you wake up a person during REM sleep, the person can vividly recall dreams. If you wake up a person during NREM sleep, generally the person .will not be dreaming.
You must have both REM and NREM sleep to get a good night's sleep. A normal person will spend about 25 percent of the night in REM sleep, and the rest in NREM. A REM session -- a dream -- lasts five to 30 minutes.
When You Miss Som
A．Y
B．N
C．NG
第6题
When we dream,there is less movement of electrical waves in our brains.
A．Right
B．Wrong
C．Not mentioned
第7题
Predators are _______.
A．able to prey even when they are in deep dream sleep
B．more likely to experience dream sleep
C．incapable of preying when immobilized by dreamless sleep
D．good at preying on stupid animals
第9题
When Mr. Kazi was young, his dream was to______.
A．be an airplane pilot
B．sell cars
C．own a restaurant
D．become a good cook
第10题
When people dream, ______.
A．they see and feel real things as they do when they are awake
B．they can't tell the difference between real life and a dream
C．both their minds and bodies are taking a rest
D．they can interact with what is going on around them
