Are you preparing for a big test? If so, you may want to go to play some basketball in between hitting the books. Doctors are starting to find more and more information that suggests a connection between exercise and brain development. Judy Cameron, a scientist at Oregon Health and Science University, studies brain development. According to her research, it seems that exercise can make blood vessels (血管), including those in the brain, stronger and more fully developed. Dr. Cameron is sure that this allows people who exercise to think better. As she says, “While we already know that exercise is good for the heart, exercise can actually cause physical changes in the brain.”
The effects of exercise on brain development can even be seen in babies. Babies who do activities that require a lot of movement show greater brain development than babies who are less physically active. Even a little movement can show big results. Margaret Barnes, a scientist, also believes in the importance of exercise. She thinks that many learning disabilities that children have in primary school or high school can result from a lack of movement as babies. Babies need movement that encourages and excites their five senses. They need to set up a connection between motion and memory. In this way, as they get older, children will begin to connect physical activity with higher learning,” says Margaret.
Older people can develop their brains as well. Cornell University studied a group of seniors who have a short-term memory increase of up to 40 percent after exercising just three hours a week. The exercise does not have to be very difficult, but it does have to increase the heart rate. Also, just like the motion for babies, exercise for older people should not be too simple. Learning some new skills or actions, such as with yoga or tat- chi helps to open up memory paths in the brain that may not have been used for a long time. For most people, any type of physical activity that increases the heart rate is helpful. The main aim is to increase the brain’s flow of blood. And your brain can benefit from as little as two to three hours of exercise a week.
1.What is the main idea of this passage?
A. How exercise makes people strong.
B. How to get good scores in a test.
C. How exercise helps the brain develop.
D. How the brain can change one’s memory.
2.According to the passage, what is the connection between exercise and brain development?
A. Exercise helps soften our blood vessels.
B. Physical exercise helps us think better.
C. The brain needs special mental exercise.
D. The more exercise, the bigger the brain.
3.For ordinary people, the smallest amount of exercise required to gain any benefit is ______.
A. two hours per week B. 40 hours per week
C. three hours per day D. 40 hours per month
4.Why is yoga suggested for seniors?
A. It does good to the joints of old people.
B. It does not increase the heart rate.
C. It includes learning new actions.
D. It can be done in groups.
高二英语阅读理解中等难度题
Are you preparing for a big test? If so, you may want to go to play some basketball in between hitting the books. Doctors are starting to find more and more information that suggests a connection between exercise and brain development. Judy Cameron, a scientist at Oregon Health and Science University, studies brain development. According to her research, it seems that exercise can make blood vessels (血管), including those in the brain, stronger and more fully developed. Dr. Cameron is sure that this allows people who exercise to think better. As she says, “While we already know that exercise is good for the heart, exercise can actually cause physical changes in the brain.”
The effects of exercise on brain development can even be seen in babies. Babies who do activities that require a lot of movement show greater brain development than babies who are less physically active. Even a little movement can show big results. Margaret Barnes, a scientist, also believes in the importance of exercise. She thinks that many learning disabilities that children have in primary school or high school can result from a lack of movement as babies. Babies need movement that encourages and excites their five senses. They need to set up a connection between motion and memory. In this way, as they get older, children will begin to connect physical activity with higher learning,” says Margaret.
Older people can develop their brains as well. Cornell University studied a group of seniors who have a short-term memory increase of up to 40 percent after exercising just three hours a week. The exercise does not have to be very difficult, but it does have to increase the heart rate. Also, just like the motion for babies, exercise for older people should not be too simple. Learning some new skills or actions, such as with yoga or tat- chi helps to open up memory paths in the brain that may not have been used for a long time. For most people, any type of physical activity that increases the heart rate is helpful. The main aim is to increase the brain’s flow of blood. And your brain can benefit from as little as two to three hours of exercise a week.
1.What is the main idea of this passage?
A. How exercise makes people strong.
B. How to get good scores in a test.
C. How exercise helps the brain develop.
D. How the brain can change one’s memory.
2.According to the passage, what is the connection between exercise and brain development?
A. Exercise helps soften our blood vessels.
B. Physical exercise helps us think better.
C. The brain needs special mental exercise.
D. The more exercise, the bigger the brain.
3.For ordinary people, the smallest amount of exercise required to gain any benefit is ______.
A. two hours per week B. 40 hours per week
C. three hours per day D. 40 hours per month
4.Why is yoga suggested for seniors?
A. It does good to the joints of old people.
B. It does not increase the heart rate.
C. It includes learning new actions.
D. It can be done in groups.
高二英语阅读理解中等难度题查看答案及解析
Do you want to go out for a hike in Phoenix? If you do, here are some hikes that you shouldn't miss.
Double Butte Loop(环线) and Hole-in-the- Rock Trail in Papago Park
Distance: 2. 3-mile loop and 825 feet out and back( Hole-in-the-Rock)
What can be a better way to have a look at the amazing red sandstone formations(岩层)of Pa-pago Park than hiking around (and inside)them? The smaller two of these beautiful formations can be explored on an easy dirt loop that starts in the West Park parking lot. It can be reached from Galvin Parkway. Then, drive across the street to the park's east side for a quick climb up rocky stairs to look out from the cave-like Hole-in-the-Rock, a popular landmark.
Blevins Trail in Usery Mountain Regional Park
Distance: 3-mile loop
It's a quick 3-mile sunset hike. You can see a lot of different kinds of cacti (仙人掌),some deer and rabbits! Superstition Mountain never gets old and, in my opinion, it is super impressive at sunset.
Waterfall Trail in White Tank Mountain Regional Park
Distance: 1.8 miles out and back
Different cacti, ancient carvings(雕像), wide paths and rocky formations along this easy trail provide the beauty of Sonoran Desert. Seeing the waterfall at the end of the trail is rare, but possible if you come after a rain. You need to pay $6 for parking the car.
Judith Tunnell Accessible Trails in South Mountain Park/Preserve
Distance: 5-mile loop
This trail includes two half-mile loops that start near the South Mountain Environmental Education Centers parking spots. The Interpretive Loop offers educational words about the surrounding desert life The Challenge Loop is slightly difficult.
1.What can attract people to Papago Park?
A.Hikes up a mountain.
B.Strange-looking caves.
C.Buildings built of red sandstone.
D.Views of red sandstone formations.
2.If you want to see some animals, which trail would you most probably choose?
A.Blevins Trail
B.Waterfall Trail
C.Judith Tunnell Accessible Trails.
D.Double Butte Loop and Hole-in-the-Rock Trail.
3.What can you do in White Tank Mountain Regional Park?
A.Walk on a challenging trail.
B.Enjoy the beauty of a desert.
C.Look at Superstition Mountain.
D.Sight a waterfall any time of the year.
高二英语阅读理解中等难度题查看答案及解析
— Are you going there with us?
— If Mary wants to go, __________.
A. I also go B. so do I C. so I will D. so will I
高二英语单项填空中等难度题查看答案及解析
If you want to make _____ life for yourself, you have to be prepared to face _____ great many unexpected difficulties.
A．/ ; a B．/ ; the C．a ; the D．a ; a
高二英语单项填空中等难度题查看答案及解析
If doctors want to test you for something, they’ll usually take a blood or urine sample. But wouldn’t it be much more convenient if they just asked you to breathe through a special instrument?
In fact, your breath can say a lot about you. In traditional Chinese medicine, doctors draw a conclusion about the health state of a patient based on the smell of his or her breath; trained dogs and rats can identify the smells of the breaths of people suffering from certain cancers; traffic police also monitor drivers’ alcohol consumption by testing their breaths.
Just like blood and urine, your breath contains lots of “metabolites” —the waste chemicals that the body produces, which vary from person to person. They are like personal health fingerprints, which is why scientists sometimes call them “breathprints”, according to Science Daily.
Compared to blood or urine testing, breath testing takes only seconds instead of hours, and it requires neither a needle nor a container to hold the body fluids(液). This means the test can be taken frequently to better detect early signs of diseases and monitor the progress of a medical treatment.
On the other hand, as an identifier, you might think that breaths are not as reliable as fingerprints since they might change based on what you eat. However, researchers in Zurich, Switzerland mapped 11 healthy volunteers’ chemical patterns by having them breathe through a special instrument, and they found that each pattern was unique and the patterns didn’t change much throughout the day, reported BBC.
“Our goal is to develop breath analysis to the point where it becomes competitive with the established analysis of blood and urine,” said Malcolm Kohler, professor at the University Hospital Zurich.
1.According to the text we know that______.
A. breath varies from person to person based on food
B. your breath may give you away if you are not careful
C. doctors can test one’s breath to find about his illness
D. trained dogs can identify people with certain cancers
2.In comparison with blood or urine testing, breath testing is _______.
A. comfortable and convincing B. traditional and reliable
C. accurate and competitive D. quick and convenient
3.What is the author’s attitude toward breath testing?
A. Doubtful. B. Approving.
C. Unconcerned. D. Worried.
4.What can we infer from the text?
A. Breath testing is reliable and may have a bright future.
B. Blood or urine testing will be less used in medical treatment.
C. Doctors have found the best way to detect early signs of diseases.
D. Traditional Chinese medicine is becoming more and more popular.
高二英语阅读理解中等难度题查看答案及解析
If you are sending a text, watching the TV or listening to the radio, you may want to stop and give this your full attention. Multi-tasking shrinks (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, “Simultaneously using mobile phones, laptops and other media devices could be changing the structure of our brains.”
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 web. The volunteers were then given brain scans which showed they had less grey matter in a region called the anterior cingulate cortex (ACC). The findings held even when differences in personality were taken into account.
The study, published in the journal PLOS ONE, is the first to make a link between multi-tasking and the structure of the brain.
Researcher Kep Kee Loh said, “Media multi-tasking is becoming more common in our lives today and there is increasing concern about its impacts on our cognition and social-emotional well-being.”
He added that more research is needed to prove that multi-tasking shrinks the brain. This is because it is also possible that people with less grey matter in the ACC are more drawn to using lots of small devices simultaneously.
Scientists have previously demonstrated brain structure can be changed on prolonged exposure to new environments and experience. Other studies have shown that training — such as learning to juggle 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.
1.According to Kep Kee Loh, ________.
A. the link between multi-tasking and brain shrinkage needs further research
B. people with less grey matter in the ACC are more attracted to multi-tasking
C. multi-tasking has harmful impacts on our cognition and social-emotional well-being
D. multi-tasking leads to a shortened attention span, depression, anxiety and lower grades
2.Which of the following is NOT mentioned in the passage?
A. What multi-tasking is probably linked with.
B. How researchers draw inferences about multi-tasking.
C. How different health conditions affect brain structure.
D. Significance and limits of the research from University of Sussex .
3.The purpose of the passage is to ________.
A. compare the latest research with previous ones
B. prove the dangers of multi-tasking
C. inform readers of research on multi-tasking
D. discuss the benefits and problems of multi-tasking
高二英语阅读理解中等难度题查看答案及解析
—What are you going to do this weekend?
—________. If time permits, I may go to Shanghai to visit my friends.
A. Don’t mention it B. It doesn’t matter C. Forget it D. It depends.
高二英语单项填空中等难度题查看答案及解析
-What are you going to do next weekend?
-_______-,if time permits ,I may go to Beijing with my friends.
A. Don’t mention it B. It doesn’t
C. Forget it D. It depends
高二英语单项填空中等难度题查看答案及解析
–What are you going to do this weekend?
--________．If time permits, I may go to Shanghai with my friends．
A.Don’t mention it B.It doesn’t matter C.Forget it D.It depends
高二英语单项填空中等难度题查看答案及解析
A student's life is never easy. 1. A lot of preparations are needed so you can be sure to go back home with a diploma and a bright future waiting for you. The following are some basic things you need to do before even seizing that passport and boarding on the plane.
●Knowing the country.
You shouldn't bother researching the country's hottest tourist spots or historical places. You won't go there as a tourist, but as a student. It'll be helpful to read the most important points in their history and to read up on their culture.2. You surely don't want to face legal problems, especially if you're away from home.
●Studying their language.
Don't expect that you can graduate abroad without knowing even the basics of the language. Before leaving your home country, take online lessons to at least master some of their words and sentences.3. Doing this will also prepare you in communicating with those who can't speak English.
● 4.
Check the conversion（兑换）of your money to their local currency, set up your bank account so you can use it there, get an insurance, and find an apartment. The Internet or your intended school will be very helpful in finding an apartment and helping you understand local currency.
Remember, you're not only carrying your own reputation but your country's reputation as well. If you act foolishly, people there might think that all of your country men are foolish as well.5.．
A. Packing your clothes.
B. Preparing for other needs.
C. Most importantly, read about their laws.
D. This will be useful in living and studying there.
E. That would surely be a very bad start for your study abroad program.
F. Going with their trends will keep it from being too obvious that you're a foreigner.
G. And it is even more difficult if you will have to complete your study in a foreign land.
高二英语七选五困难题查看答案及解析