Yawning sends out certain messages -either “Oh ,this movie is so boring” or “I probably need to get some sleep”. But did you know that a yawn can also help your brain to cool down when it is overheated?
A new study, led by a research team at Princeton University, has indicated that yawning could be the brain’s natural way of regulating temperature. People yawn more often when the temperature outdoors is lower than their body temperature but are less likely to yawn when it is hotter outdoors, according to Sciencedaily. com.
The research team did an experiment on 160 people, 80 in summer and 80 in winter, to examine how often they yawned at different air temperatures. The study found that people yawned more often in winter than in summer. Scientists say that when the air temperature is lower outside the body, there is heat exchange between the overheated brain and the cool air. But when the air temperature is higher than or equal to the body, people are less likely to yawn because the hot air they breathe in will make the brain even hotter.
When people yawn, their jaw is also stretched ,which increases blood flow and may also help cool the brain
The study showed that the amount someone yawned could be related to the amount of time they spent outside. The longer they spent outside in summer, the less they yawned. Nearly 40 percent of participants yawned within their first five minutes outside, but after that the percentage was reduced to less than 10 percent.
However, the result was the opposite in winter. The number of people who yawned increased when they spent more than five minutes outdoors. But the change was only slight compared to summertime.
According to Gallup, this is the first report to show that yawning frequencies change depending on season. This could help us to understand better the way our brains work. It may also help us understand the reason why frequent yawning can sometimes be a sign of brain disease.
1.The purpose of the experiment is ______.
A. to prove people yawn in winter and in summer equally
B. to indicate brain can regulate temperature naturally
C. to find the frequency of people’s yawning
D. to show the real reason why people yawn
2.The information we get from Paragraphs 5 and 6 is that ______.
A. longer outdoor summertime results in more yawns
B. yawning frequency changes with outdoor time
C. yawning frequency increases with outdoor time
D. longer outdoor wintertime leads to fewer yawns
3.Acorrding to the text ,people yawn more often ______.
A, when the air temperature is lower outside the body
B. when the hot air breathed in makes the brain hotter
C. when the air temperature is higher than the body
D. when the air temperature is equal to the body
4.What could be the best title for the text?
A. Yawning Is A Sign of Brain Disease
B. Yawning Carries Some Information
C. Yawning Benefits Your Body
D. Yawning Cools Your Brain
高三英语阅读理解中等难度题
Yawning sends out certain messages -either “Oh ,this movie is so boring” or “I probably need to get some sleep”. But did you know that a yawn can also help your brain to cool down when it is overheated?
A new study, led by a research team at Princeton University, has indicated that yawning could be the brain’s natural way of regulating temperature. People yawn more often when the temperature outdoors is lower than their body temperature but are less likely to yawn when it is hotter outdoors, according to Sciencedaily. com.
The research team did an experiment on 160 people, 80 in summer and 80 in winter, to examine how often they yawned at different air temperatures. The study found that people yawned more often in winter than in summer. Scientists say that when the air temperature is lower outside the body, there is heat exchange between the overheated brain and the cool air. But when the air temperature is higher than or equal to the body, people are less likely to yawn because the hot air they breathe in will make the brain even hotter.
When people yawn, their jaw is also stretched ,which increases blood flow and may also help cool the brain
The study showed that the amount someone yawned could be related to the amount of time they spent outside. The longer they spent outside in summer, the less they yawned. Nearly 40 percent of participants yawned within their first five minutes outside, but after that the percentage was reduced to less than 10 percent.
However, the result was the opposite in winter. The number of people who yawned increased when they spent more than five minutes outdoors. But the change was only slight compared to summertime.
According to Gallup, this is the first report to show that yawning frequencies change depending on season. This could help us to understand better the way our brains work. It may also help us understand the reason why frequent yawning can sometimes be a sign of brain disease.
1.The purpose of the experiment is ______.
A. to prove people yawn in winter and in summer equally
B. to indicate brain can regulate temperature naturally
C. to find the frequency of people’s yawning
D. to show the real reason why people yawn
2.The information we get from Paragraphs 5 and 6 is that ______.
A. longer outdoor summertime results in more yawns
B. yawning frequency changes with outdoor time
C. yawning frequency increases with outdoor time
D. longer outdoor wintertime leads to fewer yawns
3.Acorrding to the text ,people yawn more often ______.
A, when the air temperature is lower outside the body
B. when the hot air breathed in makes the brain hotter
C. when the air temperature is higher than the body
D. when the air temperature is equal to the body
4.What could be the best title for the text?
A. Yawning Is A Sign of Brain Disease
B. Yawning Carries Some Information
C. Yawning Benefits Your Body
D. Yawning Cools Your Brain
高三英语阅读理解中等难度题查看答案及解析
Bad communication, either written, oral, or body language, can send the wrong message in more ways than one. Here are some tips that will improve your communication skills.
1. Stand up straight, and it will show confidence. Smile, and you will seem approachable. Don’t cross your arms over your chest, because this tells people you disapprove. Keep your hands to your side, or if you are sitting, keep them in your lap.
Have confidence when you speak. If you are shy and quiet,project your voice. 2. Never turn your head away from someone when you are speaking to them, because it may show them you don’t care enough to give them your full attention, and it will make it harder for the other person to hear what you are saying.
3. If you always say “I’ve no idea of it”, it will make others feel like you don’t care enough to give a response, or that you aren’t knowledgeable enough to answer. When people ask questions, they want answers. 4. Say something like “I’m in the middle of something, can I get back to you?” or “I don’t want to ill advise you, let me find out for you.”
In written communication, always he clear. Before you send an e-mail, or any type of written communication, read over it at least once, to be sure it makes sense. 5. Written forms of communication can be tricky, because there is no way to put your tone of voice in, so if you feel like you are writing a message on a touchy subject that could he misunderstood, it’s probably best to have a face to face conversation.
A. Have good body language.
B. Listen to the person attentively.
C. Never answer with “I don’t know”.
D. Don’t give the person you are speaking to a quick response.
E. Always look the person in the eye when you are speaking to them.
F. If you aren’t sure it’s clear, have someone else read it before you send it.
G. If someone puts you on the spot, you don’t have to answer them right away.
高三英语七选五中等难度题查看答案及解析
We live in a culture that sends out very mixed messages about mistakes: We're told we learn by making them, but we work hard to avoid them. So the result is that most of us know that we are going to make mistakes, but deep down, we feel we shouldn't.
Experiments with schoolchildren who did well on a given test show that those who were praised for being smart and then offered a more challenging or less challenging task afterward usually chose the easier one. On the other hand, children praised for trying hard— rather than being smart—far more often selected the more difficult task.
If we try hard to avoid mistakes, we aren't open to getting the information we need in order to do better. In a writing study, experiments showed that those who are so scared to make mistakes perform worse in writing tasks than those who aren't as worried about being perfect. They fear receiving any kind of negative feedback, so they don't learn where they went wrong and how to get better.
We don't just learn more when we're open to mistakes, we learn deeper. Research tells us that if we're only concerned about getting the right answer, we don't always learn the underlying concepts that help us truly understand whatever we're trying to figure out. Mistakes need to be seen not as a failure to learn, but as a guide to what still needs to be learned. As Thomas Edison said, “I am not discouraged, because every abandoned wrong attempt is another step forward."
Furthermore, we often make mistakes because we try new things—we wander away from accepted paths. Teflon, penicillin—these are examples of great discoveries made by mistake. Take a page from Albert Einstein, who said, "Anyone who has never made a mistake has never tried anything new. "
1. What will happen to students praised for being smart in face of choosing tasks compared to students praised for working hard?
A. He will ask his teachers for advice.
B. He will hide his mistakes from his teachers.
C. He will work harder to avoid mistakes.
D. He will choose a less challenging task.
2.Which of the following statements is NOT acceptable according to the passage?
A. The more mistakes we make, the more we learn.
B. Mistakes can be used as a positive factor for success.
C. Being open to mistakes help you understand the truth.
D. A step forward may come from mistakes you've made.
3. What does the last paragraph want to tell us?
A. One must follow a correct path to avoid mistakes.
B. To become an Einstein, you should make mistakes.
C. Making mistakes is not a disadvantage in a way.
D. You can't make mistakes unless you try new things.
4. What's the main idea of the passage?
A. We can never avoid making mistakes when we work.
B. Success can't be achieved without making mistakes.
C. Try every means to avoid mistakes in our daily life.
D. Mistakes should be treated with a correct attitude.
高三英语阅读理解中等难度题查看答案及解析
In this modern world, we rush around all day, doing things, talking, sending and reading messages. We are always on ,always conected, always thinking, always talking. There is no36for stillness.
And when we are37to be still because we’re in line for something, or waiting at a doctor’s appointment, or on a bus or train, we often38something to do. Some will play with mobile devices, other will read something. Being still isn’t something we’re39.
This comes at a 40: we lose that time for41, for observing and listening. We lose peace.
And 42yet: sometimes too much action is worse than no action at all. You can run around crarily, but get43done.
Take a moment to think about44you spend your days. Are you constantly rushing around? Are you constantly reading and answering45checking on the news and the latest tream of information? Are you always46through your schedule?
Is this how you want to spend your47? If so, peace be with you. If not, take a moment to be 48. Don’t think about what you have to do, or what you’ve done already. 49be in the moment.
Then after a minute or two of doing that, consider your life, and how you’d50it to be. See your life with less moveanent, less doing, less rushing. See it with more stillness, more consideration, more51.
Then be that vision.
It’s prerty simple: all you have to do is sit still for a little bit each day. 52you’re gotten used to that, try doing less each day. Breathe when you feel yourself moving too53. slow down. Be present. Find happiness now, in this moment, instead of 54for it.
1. A.place B.chance C.freedom D.time
2. A.forced B.ordered C.invited D.told
3. A.have B.find C.buy D.get
4. A.familiar with B.curious about C.used to D.interested in
5. A.cost B.risk C.moment D.danger
6. A.play B.food C.sleep D.consideration
7. A.further B.worse C.farther D.deeper
8. A.everything B.anything C.nothing D.something
9. A.how B.where C.why D.whether
10. A.questions B.problems C.phones D.messages
11. A.walking B.rushing C.stepping D.going
12. A.school B.youth C.work D.life
13. A.silent B.patient C.still D.quiet
14. A.Nearly B.Ever C.Just D.Already
15. A.like B.decide C.choose D.need
16. A.activity B.research C.study D.peace
17. A.Because B.Until C.Once D.Unless
18. A.frequently B.slowly C.fast D.quickly
19. A.asking B.sending C.calling D.waiting
20. A.Value B.Miss C.Owe D.Hold
高三英语完型填空中等难度题查看答案及解析
I’ll appreciate _______ if you do me the favor to send this message to Mr. Allen.
A.that | B.it | C.this | D.you |
高三英语单项填空中等难度题查看答案及解析
If you are sending a text message, watching TV or listening to the radio, you may stop and give this your full attention. Multi-tasking shrinks(使……萎缩) the brain, research suggests.
A study found that men and women who frequently used several types of technology at the same time had less grey matter in a key part of the brain. University of Sussex researchers said, “Using mobile phones, laptops and other media devices simultaneously could be changing the structure of our brains.”
Worryingly, the part of the brain that shrinks is involved in processing emotion. The finding follows research which has linked multi-tasking with a shortened attention span, depression, anxiety and lower grades at school.
The researchers began by asking 75 healthy men and women how often they divided their attention between different types of technology. This could mean sending a text message while listening to music and checking email, or speaking on the phone while watching TV and surfing the internet. The volunteers were then given brain scans which showed they had less grey matter in a region called the anterior cingulated cortex (ACC) (前扣带皮质). Scientists have proved that brain structure can be changed on exposure to fresh environments and experience.
Other studies have shown that training – such as learning to play magic tricks or taxi drivers’ learning the map of London – can increase grey-matter densities(密度) in certain parts.
Experts have also warned of the harmful impact technology can have on our memory and attention span. The University of California team conducted a survey of more than 18,000 people aged between 18 and 99, and found 20% had problems with memory. Researchers were shocked greatly by the 14% of 18 to 39-year-old people who also worried about their memories.
Multi-tasking may shorten attention span, making it harder to focus and form memories, the researchers said, adding that youngsters may be particularly affected by stress.
1.The underlined word "simultaneously" in Para.2 means _________.
A. on one’s own B. at no time
C. at the same time D. by accident
2. All of the following are possible effects of multi-tasking except _________.
A. saving time
B. a shortened attention span
C. lower grades at school
D. depression and anxiety
3.What can increase grey-matter densities?
A. Sending a text message while listening to music .
B. Students’ doing their homework.
C. Taxi drivers’ learning the map of London.
D. Speaking on the phone while watching TV.
4.Which of the following can be the best title of this passage?
A. Media multi-tasking is becoming more popular.
B. Multi-tasking shrinks the brain.
C. Multi-tasking may shorten attention span.
D. People are worried about their memories.
高三英语阅读理解中等难度题查看答案及解析
If you are sending a text message, watching TV or listening to the radio, you may stop and give this your full attention. Multi-tasking shrinks(使……萎缩) the brain, research suggests.
A study found that men and women who frequently used several types of technology at the same time had less grey matter in a key part of the brain. University of Sussex researchers said, “Using mobile phones, laptops and other media devices simultaneously could be changing the structure of our brains.”
Worryingly, the part of the brain that shrinks is involved in processing emotion. The finding follows research which has linked multi-tasking with a shortened attention span, depression, anxiety and lower grades at school.
The researchers began by asking 75 healthy men and women how often they divided their attention between different types of technology. This could mean sending a text message while listening to music and checking email, or speaking on the phone while watching TV and surfing the internet. The volunteers were then given brain scans which showed they had less grey matter in a region called the anterior cingulated cortex (ACC)(前扣带皮质). Scientists have proved that brain structure can be changed on exposure to fresh environments and experience.
Other studies have shown that training – such as learning to play magic tricks or taxi drivers’ learning the map of London – can increase grey-matter densities(密度) in certain parts.
Experts have also warned of the harmful impact technology can have on our memory and attention span. The University of California team conducted a survey of more than 18,000 people aged between 18 and 99, and found 20% had problems with memory. Researchers were shocked greatly by the 14% of 18 to 39-year-old people who also worried about their memories.
Multi-tasking may shorten attention span, making it harder to focus and form memories, the researchers said, adding that youngsters may be particularly affected by stress.
1.The underlined word "simultaneously" in Para.2 means _________.
A. on one’s own B. at no time
C. at the same time D. by accident
2.All of the following are possible effects of multi-tasking except _________.
A. saving time B. a shortened attention span
C. lower grades at school D. depression and anxiety
3.What can increase grey-matter densities?
A. Sending a text message while listening to music .
B. Students’ doing their homework.
C. Taxi drivers’ learning the map of London.
D. Speaking on the phone while watching TV.
4.In which section of a newspaper can the passage be found?
A. Entertainment. B. Economy.
C. Tourism. D. Science.
5.Which of the following can be the best title of this passage?
A. Media multi-tasking is becoming more popular.
B. Multi-tasking shrinks the brain.
C. Multi-tasking may shorten attention span.
D. People are worried about their memories.
高三英语阅读理解中等难度题查看答案及解析
I’ll appreciate _______ if you do me the favor to send this message to Mr. Allen.
A. that B. it C. this D. you
高三英语单项填空困难题查看答案及解析
根据短文内容,从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
—I’d like to send this parcel to Australia.
—Certainly. _1.__
—Sure. It's not very heavy.
—That's 850 grams. __2.__
—I see. What are the options? _3.__
—That's right. Sending it by airmail will cost twelve dollars and sending it by surface mail will cost eight dollars.
— __4._
―Airmail should take four or five days and surface mail should take about two weeks.
―In that case, I'll send it by airmail. I'd like to send it a registered parcel.
—__5.__
―No problem. There's thirteen dollars.
―Here's your receipt. Goodbye.
A. | How long will it take to get there? |
B. | OK. That's one dollar. |
C. | Could you tell me how heavy it is? |
D. | Could you put it on the scales, so I can check the weight? |
E. | OK. That's one dollar extra. |
F. | The cost depends on how you would like to send it. |
G. | I suppose airmail is faster and more expensive than surface mail. |
高三英语其他题中等难度题查看答案及解析
________to this campaign for wiping out fever in Calcutta and save three lives for only $5, send your donation to: A.A.C., P.O.BOX 2716,GPO, New York, NY 10116.
A.Contributing B.Contributed C.To contribute D.For contributing
高三英语单项填空中等难度题查看答案及解析