Has this happened to you? You’re about to drift off to sleep when suddenly you feel like you’re falling or coming down on a roller coaster.
You then wake up to realize that you’re safe in your bed. You may have been confused or frightened for a second or two and your heart may be beating faster. You may have also felt the muscles in your body jerk(抽搐) when this all happened. Did you ever wonder why?
This falling sensation, together with a body movement known as a “sleep start”, is what doctors and scientists call a myoclonic(肌阵挛的)jerk, and it usually happens right before going into deeper stages of sleep. Here’s why doctors think the falling feeling and myoclonic jerks happen. When you fall asleep, normally your body temperature goes down and your heart start to beat just a little slower. This is because your brain signals your body to relax to prepare for sleep. When your muscles are relaxed, you go into the very first stages of sleep, but you’re not sleeping too deeply yet.
This brain activity may cause your larger muscles to contract(收缩) a little bit. In response, another part of your brain will make up a very quick mini-dream to go along with what is happening. You might think this would take a while, but your brain works so fast that it makes up the story almost at the same instant that your muscles jerk.
During this light sleep, you can be awakened easily. People who wake up during this light sleep believe they haven’t fallen asleep yet. That’s why you may think that your body jerked right before you were about to fall asleep.
Myoclonic jerk are a normal part of sleep. Most people have them at one time or another. But many people don’t realize their muscles are jerking during night sleep if it doesn’t wake them up.
So the next time you dream about falling and wake up in a sweat, don’t worry! Your body is just telling your muscles to relax and get some rest!
1.People sometimes wake up during a light sleep because______.
A. they are disturbed by others.
B. they are too tired to fall asleep.
C. their bodies are preparing for sleep.
D. they believe their lives are in danger.
2. What does the underlined part “ what is happening” in Paragraph 4 refer to?
A. The body jerk B. The mini- dream
C. The slow heartbeat D. The falling body temperature
3.The author thinks myoclonic jerks during sleep are _____.
A. worrying B. usual C. abnormal D. useful
4.It can be inferred that myoclonic jerks ________.
A. lead to muscle disease
B. happen in a deep sleep
B. are related to brain disease
D. don’t always wake people up
高三英语阅读理解中等难度题
Has this happened to you? You’re about to drift off to sleep when suddenly you feel like you’re falling or coming down on a roller coaster.
You then wake up to realize that you’re safe in your bed. You may have been confused or frightened for a second or two and your heart may be beating faster. You may have also felt the muscles in your body jerk(抽搐) when this all happened. Did you ever wonder why?
This falling sensation, together with a body movement known as a “sleep start”, is what doctors and scientists call a myoclonic(肌阵挛的)jerk, and it usually happens right before going into deeper stages of sleep. Here’s why doctors think the falling feeling and myoclonic jerks happen. When you fall asleep, normally your body temperature goes down and your heart start to beat just a little slower. This is because your brain signals your body to relax to prepare for sleep. When your muscles are relaxed, you go into the very first stages of sleep, but you’re not sleeping too deeply yet.
This brain activity may cause your larger muscles to contract(收缩) a little bit. In response, another part of your brain will make up a very quick mini-dream to go along with what is happening. You might think this would take a while, but your brain works so fast that it makes up the story almost at the same instant that your muscles jerk.
During this light sleep, you can be awakened easily. People who wake up during this light sleep believe they haven’t fallen asleep yet. That’s why you may think that your body jerked right before you were about to fall asleep.
Myoclonic jerk are a normal part of sleep. Most people have them at one time or another. But many people don’t realize their muscles are jerking during night sleep if it doesn’t wake them up.
So the next time you dream about falling and wake up in a sweat, don’t worry! Your body is just telling your muscles to relax and get some rest!
1.People sometimes wake up during a light sleep because______.
A. they are disturbed by others.
B. they are too tired to fall asleep.
C. their bodies are preparing for sleep.
D. they believe their lives are in danger.
2. What does the underlined part “ what is happening” in Paragraph 4 refer to?
A. The body jerk B. The mini- dream
C. The slow heartbeat D. The falling body temperature
3.The author thinks myoclonic jerks during sleep are _____.
A. worrying B. usual C. abnormal D. useful
4.It can be inferred that myoclonic jerks ________.
A. lead to muscle disease
B. happen in a deep sleep
B. are related to brain disease
D. don’t always wake people up
高三英语阅读理解中等难度题查看答案及解析
It has happened to all of us．You want to talk about an object，but you forgot the name of it．Or you never knew the name at all．Maybe you are not even sure there is a word for it．
For example，that thing, that you need to fix your bicycle．Or perhaps it is something you need for your computer·Or that part on your motorcycle that never，ever seems to work．
What are these things?
They are called“doohickies"·A doohickey is a word you use when you do not know，or you have forgotten，the real name of an object·
The MacMillan Dictionary defines doohickey as“something such as a small object or tool that you cannot remember the name of"·The American Heritage Dictionary says it is“something，especially a small device or part，whose name is unknown or forgotten"．
Language experts say the word first started being used in the United States in the early 1900s· But other experts say they have seen examples of words like that in writings from the middle 1800s．
The Merriam-Webster Dictionary for Learners of American English gives this example of how native speakers might use doohickey：“I need one of those doohickeys，you know，with the long handle．”
Merriam-Webster adds that doohickey may be a combination of two other words：“doodad" and“hickey" ．Strange as it may be，both of these words mean the same as doohickey．The dictionary lists a lot of strange words as.synonyms for doohickey．The most common are whatchamacallit，whatnot and whatsit．
You will probably never see these words in official documents or newspaper reports·But you might hear them in informal American English，when people are talking to each other·
“Hey，what does this doohickey do，anyway?”
"Dude，bring me that thingamajig，willya·”
"Janine，can you get me one of those whatchamacallits?”
Most Americans will know what you are talking about if you use one of those words.Just point at the object，use one of these words，and they will bring it to you·
1.When people need a doohickey it means they need something＿＿·
A.which can be used to repair a bicycle
B．which can be used to fix a computer
C．whose name is forgotten
D．whose handle is very long
2.The words similar to doohickey were most likely to be seen in＿＿for the first time．
A.1800 B.1850 C.1900 D.1950
3.You are sure to find the word whatchamacallit in＿＿
A.the Macmillan Dictionary
B．the American Heritage Dictionary
C．an Official document or a newspaper report
D．the Merriam-Webster Dictionary for Learners of American English
4.The above，passage is mainly about＿＿·
A.a special word
B．American English dictionaries’
C．the development of American English
D．the way to learn and use American English
高三英语阅读理解中等难度题查看答案及解析
Tom is absent this week.Do you know what________to him?
A.has happened B.was happening C.will happen D.had happened
高三英语单项填空简单题查看答案及解析
—What has happened to you．Jim?
— . I cut myself shaving this moming．
A．It's nothing B．No idea C．No problem D．Forget it
高三英语单项填空中等难度题查看答案及解析
--- Can I have a talk with you at about 5 this afternoon, Mr．Smith?
--- All right, I ______ to my office from a conference then．I will be waiting for you there．
| A．have come back | B．will come back |
| C．will have come back | D．will be coming back |
高三英语单项填空简单题查看答案及解析
—Ouch! I_______ this really bad toothache for about three days.
—You really need to take a day off and see a dentist.
A.have B.am having C.have had D.had
高三英语单项填空中等难度题查看答案及解析
Try this: For an entire day, forget about the clock. Eat when you’re hungry and sleep when you’re tired. What do you think will happen?
You may be surprised to find that your day is much like most other days. You’ll probably get hungry when you normally eat and tired when you normally sleep. Even though you don’t know what time it is, your body does.These patterns of daily life are called circadian rhythms（生理节奏）, and they are more than just habits. Inside our bodies are several clocklike systems that follow a roughly 24-hour cycle. Throughout the day and night, our inner clocks direct changes in temperature, body chemicals, hunger, sleepiness and more.
Everyone’s rhythms are different, which is why you might like to stay up late while your sister always wants to go to bed early. But on the whole, everyone is programmed to feel tired at night and energetic during the day. Learning about our body clocks may help scientists understand why problems arise when we act out of step with our circadian rhythms. For example, traveling across time zones can make people wake up in the middle of the night. Regularly staying up late can make kids do worse in tests.
“There is a growing sense that when we eat and when we sleep are important parts of how healthy we are,” says Steven Shea, director of the Sleep Disorders Program at Brigham and Women’s Hospital in Boston.
One way to learn about how our body clocks tick is to mess them up and see what happens. That’s what neurologist（神经病学家）Frank Scheer and his workmates did in a recent study. Staying up night after night, their studies suggest, could make kids extra hungry and more likely to gain weight. And regularly sleeping too little, Scheer says, may be one cause of the recent increase in childhood obesity.
1.What will happen if you forget about the clock according to the passage?
A. You will feel upset.
B. You will behave normally.
C. Your body will not know what time it is.
D. You will probably get hungry more easily.
2.Mike feels energetic at 12 midnight while Tom feels sleepy. What advice would be given by the writer?
A. Both should see a doctor.. B. Tom should see a doctor.
C. Both should take it easy. D. Mike should have a watch.
3.How do Frank Scheer and his workmates study body clocks?
A. By seeing what happens when they are messed up.
B. By asking questions and collecting answers.
C. By studying people traveling across time zones.
D. By programming people with man-made clocks.
4.What will the writer most probably talk about next?
A. Other examples of what people will do when their body clocks go wrong.
B. Some effective medicines that can keep people from putting on weight.
C. Why it is important to have a normal body clock.
D. What circadian rhythms are and how they work.
高三英语阅读理解困难题查看答案及解析
Do you sleep well? Some people get off to sleep as soon as the head hits the pillow, but many others are not so lucky．In fact，the lack of quality sleep has become a public health issue around the world．According to the World Association of Sleep Medicine，45 percent of the world’s population suffer from sleep problems．One in eight people don’t sleep well and are easily woken．7．6 percent sleep less than 3 hours each night．Some even can not fall asleep for several days in a row．
As a basic bodily and mental need，sleep is essential for our survival．It helps us to fight diseases，strengthen our memory, perform better in work and school and improve our quality of life．Lack of sleep is known to have a significant negative influence on health，both in the short and long term．Poor sleep has been associated with obesity, weakened immune systems and even some cancers，as well as depression and anxiety．
The World Sleep Day, held on the third Friday of March，is an annual celebration of sleep to lighten the burden of sleep problems through better prevention and management of sleep disorders．
Unhealthy lifestyle may be the first to blame for sleeplessness．More and more people use cellphones and computers in bed，with many staying up until midnight．Modern technology does make our life convenient，but abuse of it ruins our health．Environmental conditions，such as temperature，noise，light，bed comfort also play an important role in one’s ability to get proper sleep．Besides，improper evening diet，like a full or an empty stomach，coffee and alcohol all contribute to sleep problems．Of course，when it comes to causing poor sleep stress from finances，family or work should never be ignored．
However, those who suffer from sleep disorders don’t necessarily have to continue to do so—most sleep problems can be solved．
1.What can be inferred from Paragraph 1 ？
A．Nobody can stay awake for several days．
B．All people are going through sleep problems．
C．Sleep problems have become a worldwide concern．
D．The majority of the world’s population can’t sleep well．
2.What does Paragraph 4 mainly tell us?
A．The influences of lack of sleep．
B．The possible causes of poor sleep．
C．Poor sleep is associated with illness．
D．Good sleep helps us to perform better.
3.What will be discussed in the paragraph that follows?
A．The harm of sleep problems．
B．Activities on the World Sleep Day．
C．Interviews of poor sleep sufferers．
D．Measures against sleep problems．
高三英语阅读理解中等难度题查看答案及解析
Do you sleep well? Some people get off to sleep as soon as their head hits the pillow, but many others are not so lucky. In fact, the lack of quality sleep has become a public health issue around the world. According to me World Association of Sleep Medicine, 45 percent of the world's population suffer from sleep problems. One in eight people don't sleep well and are easily woken. 7.6 percent sleep less than 3 hours each night. Some even cannot fall asleep for several days in a row.
As a basic bodily and mental need, sleep is essential for our survival, it helps us to fight diseases, strengthen our memory, perform better in work and school and improve our quality of life. Lack of sleep is known to have a significant negative influence on health, both in the short and long term. Poor sleep has been associated with obesity, diabetes, weakened immune systems and even some cancers, as well as depression and anxiety.
The World Sleep Day, held on the third Friday of March, is an annual celebration of sleep to lighten the burden of sleep problems through better prevention and management of sleep disorders.
To achieve this goal, we must figure out what causes sleepiness and sleeplessness.
Unhealthy lifestyle may be the first to blame. More and more people use cell phones and computers in bed, with many staying up until midnight. Modern technology does make our life convenient, but abuse of it ruins our health. Environmental conditions, such as temperature, noise, light, bed comfort also play an important Pole in one's ability to get proper sleep. Besides, improper evening diet, like a full or an empty stomach, coffee and alcohol all contribute to sleep problems. Of course, when it comes to causing poor sleep, stress from finances, family or work should never be ignored．
However, those who suffer from sleep disorders don't necessarily have to continue to do so -most sleep problems can be managed．
1.What can be inferred from Paragraph 1?
A．Nobody can stay awake for several days
B．Most people are going through sleep problems
C．Sleep problems have become a worldwide concern．
D．The majority of the world's population can't sleep well．
2.Which of the following is not a direct cause of sleep problems?
A．Unhealthy lifestyle． B．Modern technology．
C．Environmental conditions． D．Work stress．
3.What will be discussed in the paragraph that follows?
A．The harm of sleep problems．
B．Activities on the World Sleep Day．
C．Interviews of poor sleep sufferers．
D．Measures against sleep problems．
4.Which best describes the author's attitude to sleep problem in the text?
A．Doubtful． B．Disapproving． C．Concerned． D．Enthusiastic
高三英语阅读理解中等难度题查看答案及解析
Do you sleep well? Some people get off to sleep as soon as the head hits the pillow, but many others are not so lucky．In fact，the lack of quality sleep has become a public health issue around the world．According to the World Association of Sleep Medicine，45 percent of the world’s population suffer from sleep problems．One in eight people don’t sleep well and are easily woken．7．6 percent sleep less than 3 hours each night．Some even can not fall asleep for several days in a row．
As a basic bodily and mental need，sleep is essential for our survival．It helps us to fight diseases，strengthen our memory, perform better in work and school and improve our quality of life．Lack of sleep is known to have a significant negative influence on health，both in the short and long term．Poor sleep has been associated with obesity, weakened immune systems and even some cancers，as well as depression and anxiety．
The World Sleep Day, held on the third Friday of March，is an annual celebration of sleep to lighten the burden of sleep problems through better prevention and management of sleep disorders．
Unhealthy lifestyle may be the first to blame for sleeplessness．More and more people use cellphones and computers in bed，with many staying up until midnight．Modern technology does make our life convenient，but abuse of it ruins our health．Environmental conditions，such as temperature，noise，light，bed comfort also play an important role in one’s ability to get proper sleep．Besides，improper evening diet，like a full or an empty stomach，coffee and alcohol all contribute to sleep problems．Of course，when it comes to causing poor sleep stress from finances，family or work should never be ignored．
However, those who suffer from sleep disorders don’t necessarily have to continue to do so—most sleep problems can be solved．
1.What can be inferred from Paragraph 1 ？
A．Nobody can stay awake for several days．
B．All people are going through sleep problems．
C．Sleep problems have become a worldwide concern．
D．The majority of the world’s population can’t sleep well．
2.What does Paragraph 4 mainly tell us?
A．The influences of lack of sleep．
B．The possible causes of poor sleep．
C．Poor sleep is associated with illness．
D．Good sleep helps us to perform better．
3.What will be discussed in the paragraph that follows?
A．The harm of sleep problems．
B．Activities on the World Sleep Day．
C．Interviews of poor sleep sufferers．
D．Measures against sleep problems．
高三英语阅读理解中等难度题查看答案及解析