Sleep is a funny thing. We're taught that we should get seve..

第1题

Researchers have found that REM（rapid eye movement)sleep is important to human beings. Thi

Researchers have found that REM(rapid eye movement)sleep is important to human beings. This type of sleep generally occurs four or five times during one night of sleep lasting five minutes to forty minutes for each occurrence. The deeper a persons sleep becomes, the longer the periods of rapid eye movement. There are physical changes in the body to show that a person has changed from NREM(non-rapid eye movement)to REM sleep. Breathing becomes faster, the heart rate increases, and, as the name implies, the eyes begin to move quickly. Accompanying these physical changes in the body there is a very important characteristic of REM sleep. It is during REM sleep that a person dreams.

According to the passage, how often does REM sleep occur in one night？

A．Once.

B．Twice.

C．Four or five times.

D．Forty times.

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第2题

下列程序的运行结果是______。ClassC14implementsRunnable{private int i;public C14（int n) {thi

下列程序的运行结果是______。 Class C14 implements Runnable { private int i; public C14(int n) { this.i = n; } public void run{) { try { Thread.currentThread().sleep(i); } catch(InterruptedException ie) { System.err.println(ie.tString()); } System.out.println("线程" + Thread.currentThread() .getName + "睡眠了" + i + "毫秒结束")； } } public class Testl4 { public static void main(String[] args) { Thread t = new Thread(new C14(300), "t"); t.start(); } }

A．线程t睡眠了300毫秒结束

B．线程Thread-0睡眠了300毫秒结束

C．线程t睡眠了i毫秒结束

D．线程Thread-0睡眠了i毫秒结束

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第3题

Sleep is a funny thing. We're taught that we should get seven or eight hours a night, but

a lot of us get by just fine on less, and some of us actually sleep too much. A study out of the University of Buffalo reported that people who routinely sleep more than eight hours a day and are still tired are nearly three times as likely to die of stroke--probably as a result of an underlying disorder that keeps them from sleeping soundly.

Doctors have their own special sleep problems. Residents are famously short of sleep. It is not unusual for. them to work 40 hours in a row without rest. They are not in the least worried about it, confident they can still deliver the highest quality of medical care. But an article in the Journal of the American Medical Association points out that in the morning after 24 hours of sleeplessness, a person' s motor performance is comparable to that of someone who is drunk. Curiously, surgeons who believe that operating under the influence of alcohol is grounds for sacking often don' t think twice about operating without enough sleep.

"I could tell you horror stories," says Jaya Agrawal, president of the American Medical Student Association, which runs a website for residents. Some are terrifying." I was operating after being up for over 36 hours," one writes. "I literally fell asleep standing up and nearly planted my face into the wound."

"Practically every surgical resident I know has fallen asleep at the wheel driving home from work," writes another. "I know of three who have hit parked cars. Another hit a 'Jersey gate' on the New Jersey Expressway, going 105kin/h."

"Your own patients have become the enemy," writes a third, because they are "the one thing that stands between you and a few hours of sleep."

The U.S. controls the hours of pilots and truck drivers. But until such a system is in place for doctors, patients are on their own. If you're worded about the people treating you or a loved one, you should feel free to ask how many hours of sleep they have had and if more rested staffers are available.

Sleep is a funny thing because ______.

A．the longer one sleeps, the less sound sleep he gets

B．the more sleep one gets, the more likely a stroke occurs

C．many people stick to about eight hours of sleep to stay fine

D．many people who sleep six hours a night still feel energetic in the day

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第4题

Sleep is a funny thing. We're taught that we should get seven or eight hours a night, but

a lot of us get by just fine on less, and some of us actually sleep too much. A study out of the University of Buffalo reported that people who routinely sleep more than eight hours a day and are still tired are nearly three times as likely to die of stroke--probably as a result of an underlying disorder that keeps them from sleeping soundly.

Doctors have their own special sleep problems. Residents are famously short of sleep. It is not unusual for. them to work 40 hours in a row without rest. They are not in the least worried about it, confident they can still deliver the highest quality of medical care. But an article in the Journal of the American Medical Association points out that in the morning after 24 hours of sleeplessness, a person' s motor performance is comparable to that of someone who is drunk. Curiously, surgeons who believe that operating under the influence of alcohol is grounds for sacking often don' t think twice about operating without enough sleep.

"I could tell you horror stories," says Jaya Agrawal, president of the American Medical Student Association, which runs a website for residents. Some are terrifying." I was operating after being up for over 36 hours," one writes. "I literally fell asleep standing up and nearly planted my face into the wound."

"Practically every surgical resident I know has fallen asleep at the wheel driving home from work," writes another. "I know of three who have hit parked cars. Another hit a 'Jersey gate' on the New Jersey Expressway, going 105kin/h."

"Your own patients have become the enemy," writes a third, because they are "the one thing that stands between you and a few hours of sleep."

The U.S. controls the hours of pilots and truck drivers. But until such a system is in place for doctors, patients are on their own. If you're worded about the people treating you or a loved one, you should feel free to ask how many hours of sleep they have had and if more rested staffers are available.

Sleep is a funny thing because ______.

A．the longer one sleeps, the less sound sleep he gets

B．the more sleep one gets, the more likely a stroke occurs

C．many people stick to about eight hours of sleep to stay fine

D．many people who sleep six hours a night still feel energetic in the day

点击查看答案

第5题

Sleep is a funny thing. We‟re taught that we should get seven or eight hours a night, bu

t a lot of us get by just fine on less, and some of us actually sleep too much. A study out of the University of Buffalo reported that people who routinely sleep more than eight hours a day and are still tired are nearly three times as likely to dir of stroke---probably as a result of an underlying disorder that keeps them from sleeping soundly.

Doctors have their own special sleep problems. Residents are famously short of sleep. It is not unusual for them to work 40 hours in a row without rest. They are not in the least worried about it, confident they can still deliver the highest quality of medical care. But an article in the Journal of the American Medical Association points out that in the morning after 24 hours of sleeplessness, a person‟s motor performance is comparable to that of someone who is drunk. Curiously, surgeons who believe that operating under the influence of alcohol is grounds for sacking often don‟t think twice about operating without enough sleep.

“ I could tell you horror stories, ” says Jaya Agrawal, president of the American Medical Student Association, which runs a website for residents. Some are terrifying. “I was operating after being up for over 36 hours, “ one writes. “ I literally fell asleep standing up and nearly planted my face into the wound.”

“ Practically every surgical resident I know has fallen asleep at the wheel driving home from work,” writes another. “I know of three who have hit parked cars. Another hit a „ Jersey gate‟ on the New Jersey Expressway, going 105km/h.”

“Your own patients have become the enemy,” writes a third, because they are “the one thing that stands between you and a few hours of sleep.”

The U.S. controls the hours of pilots and truck drivers. But until such a system is in place for doctors, patients are on their own. If you‟re worried about the people treating you or a loved one, you should feel free to ask how many hours of sleep they have had and if more rested staffers are available.

1.Sleep is a funny thing because ____________.

A. the longer one sleeps, the less sound sleep he gets

B. the more sleep one gets, the more likely a stroke occurs

C. many people stick to about eight hours of sleep to stay fine

D. many people who sleep six hours a night still feel energetic in the day

2.A surgeon who has worked 40 hours in a row without sleep ___________.

A. can still provide quality medical care

B. will remain alert because he is used to it

C. may ignore the potential risk of insufficient sleep

D. should be fired if he continues the medical operation

3.According to one resident, they are short of sleep because ____________.

A. they are too tired to fall asleep

B. they are forbidden to sleep at work

C. they are kept by treating their patients

D. they are too worried about oversleeping

4.They resident who hit a “Jersey gate” on the New Jersey Expressway must have________.

A. fallen asleep

B. drunk too much

C. been driving too long

D. avoided hitting parked cars

5.Patients are now advised to __________.

A. monitor the hours of doctors by themselves

B. make sure that the doctors who treat them have had enough sleep

C. ask for legal control of the hours of doctors

D. allow their doctors to sleep several hours before the operation

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第6题

Happy Therapy （诊疗)Norman Cousins was a businessman from the United States who often trav

Happy Therapy (诊疗)

Norman Cousins was a businessman from the United States who often traveled around the world on business. He enjoyed his work and traveling.

Then, after returning to the United States from a busy and tiring trip to Russia, Mr. Cousins got sick. Because he had pushed his body to the limit of its strength on the trip, a chemical change began to take place inside him. The material between his bones became weak.

In less than one week after his return, he could not stand. Every move that he made was painful. He was not able to sleep at night.

The doctors told Mr. Cousins that they did not know how to cure his problems and he might never get over the illness. Mr. Cousins, however, refused to give up hope.

Mr. Cousins thought that unhappy thoughts were causing bad chemical changes in his body. He did not want to take medicine to cure himself. Instead, he felt that happy thoughts or laughter might cure his illness.

He began to experiment on himself while still in the hospital by watching funny shows on television. Mr. Cousins quickly found that ten minutes of real laughter during the day gave him two hours of pain-free sleep at night,

Deciding that the doctors could not help him, Mr. Cousins left the hospital and checked into a hotel room where he could continue his experiments with laughter. For eight days, Mr. Cousins rested in the hotel room watching funny shows on television, reading funny books, and sleeping whenever he felt tired. Within three weeks, he felt well enough to take a vacation to Puerto Rico where he began running on the beach for exercise.

After a few months, Mr. Cousins returned to work. He had laughed himself back to health.

Mr. Cousins got sick after returning from______.

A．a busy trip to the US.

B．a tiring trip to Russia.

C．a trip around the world.

D．a trip to Puerto Rico.

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第7题

SleepSleep is one of those funny things about being a human being—you just have to do it.

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, tike the one where a bad person is chasing you and you can't run or yell. Does that make any sense？

Characteristics of Sleep

We all know how sleep looks—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 frightening 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.

For any animal living in the wild, it just doesn't seem very smart to design in a necessary eight-hour period of near-total unconsciousness every day. Yet that is exactly what evolution has done. So there must be a pretty good reason for it!

Who Sleeps？

Reptiles(爬行动物), birds and mammals all sleep. That is, they become unconscious to their surroundings for periods of time. Some fish and amphibians reduce their awareness but do not ever become unconscious like the higher vertebrates(脊椎动物) 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 (dogs, for example) 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(脑电图仪) to a person's head, you can record the person's brainwave activity. A waking and relaxed person generates alpha waves, which are consistent vibrations at about 10 cycles per second. An alert person generates beta waves, which are about 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 brainwave patterns slow down. The slower the brainwave patterns, the deeper the sleep—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(抽搐) during REM sleep. Periods of sleep other than REM sleep are known as NREM (non-REM) sleep.

REM sleep is when you dream, ff

A．Y

B．N

C．NG

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第8题

Sleep is a funny thing. We‟re taught that we should get seven or eight hours a night, bu

t a lot of us get by just fine on less, and some of us actually sleep too much. A study out of the University of Buffalo reported that people who routinely sleep more than eight hours a day and are still tired are nearly three times as likely to dir of stroke---probably as a result of an underlying disorder that keeps them from sleeping soundly.

Doctors have their own special sleep problems. Residents are famously short of sleep. It is not unusual for them to work 40 hours in a row without rest. They are not in the least worried about it, confident they can still deliver the highest quality of medical care. But an article in the Journal of the American Medical Association points out that in the morning after 24 hours of sleeplessness, a person‟s motor performance is comparable to that of someone who is drunk. Curiously, surgeons who believe that operating under the influence of alcohol is grounds for sacking often don‟t think twice about operating without enough sleep.

“ I could tell you horror stories, ” says Jaya Agrawal, president of the American Medical Student Association, which runs a website for residents. Some are terrifying. “I was operating after being up for over 36 hours, “ one writes. “ I literally fell asleep standing up and nearly planted my face into the wound.”

“ Practically every surgical resident I know has fallen asleep at the wheel driving home from work,” writes another. “I know of three who have hit parked cars. Another hit a „ Jersey gate‟ on the New Jersey Expressway, going 105km/h.”

“Your own patients have become the enemy,” writes a third, because they are “the one thing that stands between you and a few hours of sleep.”

The U.S. controls the hours of pilots and truck drivers. But until such a system is in place for doctors, patients are on their own. If you‟re worried about the people treating you or a loved one, you should feel free to ask how many hours of sleep they have had and if more rested staffers are available.

1.Sleep is a funny thing because ____________.

A. the longer one sleeps, the less sound sleep he gets

B. the more sleep one gets, the more likely a stroke occurs

C. many people stick to about eight hours of sleep to stay fine

D. many people who sleep six hours a night still feel energetic in the day

2.A surgeon who has worked 40 hours in a row without sleep ___________.

A. can still provide quality medical care

B. will remain alert because he is used to it

C. may ignore the potential risk of insufficient sleep

D. should be fired if he continues the medical operation

3.According to one resident, they are short of sleep because ____________.

A. they are too tired to fall asleep

B. they are forbidden to sleep at work

C. they are kept by treating their patients

D. they are too worried about oversleeping

4.They resident who hit a “Jersey gate” on the New Jersey Expressway must have________.

A. fallen asleep

B. drunk too much

C. been driving too long

D. avoided hitting parked cars

5.Patients are now advised to __________.

A. monitor the hours of doctors by themselves

B. make sure that the doctors who treat them have had enough sleep

C. ask for legal control of the hours of doctors

D. allow their doctors to sleep several hours before the operation

点击查看答案

第9题

Different Stages of SleepA scientist who has spent many years studying sleep was asked thi

Different Stages of Sleep

A scientist who has spent many years studying sleep was asked this question: "Why do we need sleep？" His answer was."If we do not sleep, we get very sleepy, "No one knows exactly why we sleep．But scientists have learned a lot．From．sleep experiments, scientists have [earned that there are four different stages 0f sleep;

When you first fall asleep, your heart starts to beat more slowly and your breathing slows down．If something wakes you, you might not think that you had been asleep．Some people call this kind of sleep dozing (打盹)．Scientists call it Stage 1 sleep.

Next, if you are no,t awakened, you drift into a deeper sleep．Your pu!se and breathing become even slower than they were during Stage 1 sleep．But you can still be awakened quite easily．If you take a catnap (小睡，打盹), you probably will not get any further than this stage of sleep, which is called Stage 2.

If you sleep longer than about twenty minutes, you go into the third stage of sleep.Your body is very relaxed．It would take a loud noise to wake you up.

You have probably heard of people who walk in their sleep．No one knows what

makes people sleepwalk (梦游)．But a person can sleepwalk only during Stage 4．This is the deepest kind of Sleep．I{ someone wakes you up during Stage 4, you might, feel very confused．It might take you a few minutes to get used to being awake.

After about ten minutes of Stage 4 sleep, you go back to Stage 3 and then to Stage 2.Then, something quite different begins.to happen．Your heartbeat becomes rapid．Your eyelids flutter (跳动), and your eyes move．This stage of sleep is called REM (rapid eye movement) sleep.

Most dreams happen during REM sleep． Scientists who study sleep often make noisesor talk to sleeping people in the REM stage．They are trying to find out what effects noises can have on dreams． As sleep research continues, scientists might also learn what causes dreams and how dreams might be helpful to people.

第 31 题 According to the author, why do we need sleep？

A．If we do not sleep, we get very sleepy.

B．Because there are four different stages of sleep.

C．No one knows the cause.

D．It is not mentioned in the article.

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第10题

Happy Therapy （诊疗)Norman Cousins was a businessman from the United States who often trav

Happy Therapy (诊疗)

Norman Cousins was a businessman from the United States who often traveled around the world on business. He enjoyed his work and traveling.

Then, after returning to tile United States from a busy and tiring trip to Russia, Mr. Cousins got sick. Because he had pushed his body to the limit of its strength on the trip, a chemical change began to take place inside him. The material between his bones became weak.

In less than one week after his return, he could not stand. Every move that he made was painful. He was not able to sleep at night.

The doctors told Mr. Cousins that they did not know how to cure his problems and he might never get over the illness. Mr. Cousins, however, refused to give up hope.

Mr. Cousins thought that unhappy thoughts were causing bad chemical changes in his body. He did not want to take medicine to cure himself. Instead, he felt that happy thoughts or laughter might cure his illness.

He began to experiment on himself while still in the hospital by watching funny shows on television. Mr. Cousins quickly found that ten minutes of real laughter during the day gave him two hours of pain-free sleep at night.

Deciding that the doctors could not help him, Mr. Cousins left the hospital and checked into a hotel room where he could continue his experiments with laughter. For eight days, Mr. Cousins rested in the hotel room watching funny shows on television, reading funny books, and sleeping whenever he felt tired. Within three weeks, he felt well enough to take a vacation to Puerto Rico where he began running on the beach for exercise.

After a few months, Mr. Cousins returned to work He had laughed himself back to health.

Mr. Cousins got sick after returning from______.

A．a tiring trip to Russia.

B．a busy trip to the US.

C．a trip around the world.

D．a trip to Puerto Rico.

点击查看答案