Sleep，considered as a luxury by many, is essential for a person’s well-being. Researchers have found that insufficient sleep and tiredness increase a person’s risk of developing severe medical conditions, such as obesity, high blood sugar levels and heart disease. Now, a new study has found that getting sufficient sleep is also the key to improving academic performance.
Jeffery Gross, the university science professor who led the research, was not trying to find the relationship between sleep and grades when he handed out smartwatches to the 100 students in his chemistry class. Instead, the professor hoped the wrist-worn devices, which track a person’s physical activity, would show a connection between exercise and academic achievements.
While Gross’s data showed no relationship between these two factors, the study found something surprising. As the researchers were analyzing the data, they noticed a linear(线性的)relationship between the average amount of sleep the students got and their results in the course’s 11 quizzes, three midterm tests and the final exam.
Even more interesting, it was not sufficient for students to just head to bed early the night before the test. Instead, it’s the sleep you get during the days when learning is happening that matters most.
When students went to bed each night was similarly important. Those went to bed in the early hours of the morning performed poorly, even if the total sleep time was the same as higher-performing student. “When you go to bed matters,” Gross says. “If you go to bed at 10, or 12, or 1 at night, and sleep for 7 hours, your performance is the same. But if you go to bed after 2, your performance started to go down even if you get the same seven hours’ sleep. So, quantity isn’t everything.”
Perhaps the most interesting was the huge impact that small differences in sleep patterns had on the students’ grades. The overall course grades of students averaging six and a half hours of sleep each night were 25% lower than students who averaged just one hour more sleep. Similarly, students who varied their bedtime by even one hour each night had grades that dropped 45% below those with more regular bedtime.
Who knows getting straight A’s just required some extra sleep?
1.Based on his original objective, which best describes Professor Gross’s research findings?
A.Accidental B.Complete
C.Convincing D.Doubtful
2.Who were the people taking part in the study?
A.Middle school chemistry students
B.Professor Gross’s own students
C.Volunteers from different universities
D.University student athletes
3.How did Professor Gross’s team measure students’ academic performance?
A.Making the students wear special watches
B.Using students’ university entrance test results
C.Giving the students regular quizzes after class
D.Using the students’ normal test and quiz grades
4.Based on the study’s findings, who is likely to perform best academically?
A.A student who has a good night’s sleep the night before an important test.
B.A student whose normal bedtime varies between 9 p.m. and 12 p.m.
C.A student who sleeps from 11 p.m. to 6 a.m. each day.
D.A student who sleeps for a total of 7 hours each night.
高二英语阅读选择中等难度题
Sleep is essential for a person’s wellbeing. Researchers have found that sleep loss increases a person’s risk of developing serious medical conditions. Now, a new study has found that getting enough sleep is also the key to improving academic performance.
Jeffrey Grossman, who led the research, was not trying to find the correlation (相关性) between sleep and grades when he handed out Fitbits to the students in his class. Instead, the professor hoped the popular wrist-worn electronic device (装置), which tracks a person’s activity 24/7, would show a connection between physical exercise and academic achievement.
As part of the research, a quarter of the participants chose a fitness class specially created for the study. After the school term ended, the researchers carefully analysed the data. Much to Grossman’s surprise, they found no measurable difference in test performance between the group that had been physically active and the group that had not.
However, the study presented a surprising viewpoint in the journal Science of Learning. Going through the large amount of data, Grossman noticed an interesting trend (走向) from the participants sleep patterns. There was a straight-line relationship between the average amount of sleep and his/her grade on the exams.
Besides, it was not enough for students to just head to bed early the night before a test. Grossman says: “We’ve heard the phrase ‘Get a good night’s sleep, you’ve got a big day tomorrow.’ It turns out this does not relate at all to test performance. Instead, it’s the sleep you get during the days when learning is happening that matters most.”
The time students went to bed each night was similarly important. Those who went to bed in the early hours of the morning performed poorly, even if the total sleep time was the same as a higher-performing student.
The research does not prove that sleep is the only component that helps improve academic performance. However, Grossman says the results are a strong indication that sleep really matters. Who knew getting A’s just required some extra ZZZ’s?
1.What’s Grossman’s original purpose by using Fitbits in the research?
A.To improve students sleep patterns.
B.To regulate students’ daily behavior.
C.To monitor students’ physical condition.
D.To find effects of physical exercise on grades.
2.What did Grossman think of the research result?
A.It was unexpected. B.It was changeable
C.It was unreliable. D.It was fruitless.
3.What plays a more important part in test performance?
A.Sleep in the learning stage. B.Average amount of sleep during tests.
C.Sleep quality the night before the test. D.A regular bedtime.
4.What is the best title for the text?
A.Be Physically Active and Sleep More
B.Enough Sleep Benefits Our Wellbeing
C.Catch ZZZ’s for Good Test Performance
D.The More Exercise, the Better Schoolwork
高二英语阅读理解困难题查看答案及解析
Sleep，considered as a luxury by many, is essential for a person’s well-being. Researchers have found that insufficient sleep and tiredness increase a person’s risk of developing severe medical conditions, such as obesity, high blood sugar levels and heart disease. Now, a new study has found that getting sufficient sleep is also the key to improving academic performance.
Jeffery Gross, the university science professor who led the research, was not trying to find the relationship between sleep and grades when he handed out smartwatches to the 100 students in his chemistry class. Instead, the professor hoped the wrist-worn devices, which track a person’s physical activity, would show a connection between exercise and academic achievements.
While Gross’s data showed no relationship between these two factors, the study found something surprising. As the researchers were analyzing the data, they noticed a linear(线性的)relationship between the average amount of sleep the students got and their results in the course’s 11 quizzes, three midterm tests and the final exam.
Even more interesting, it was not sufficient for students to just head to bed early the night before the test. Instead, it’s the sleep you get during the days when learning is happening that matters most.
When students went to bed each night was similarly important. Those went to bed in the early hours of the morning performed poorly, even if the total sleep time was the same as higher-performing student. “When you go to bed matters,” Gross says. “If you go to bed at 10, or 12, or 1 at night, and sleep for 7 hours, your performance is the same. But if you go to bed after 2, your performance started to go down even if you get the same seven hours’ sleep. So, quantity isn’t everything.”
Perhaps the most interesting was the huge impact that small differences in sleep patterns had on the students’ grades. The overall course grades of students averaging six and a half hours of sleep each night were 25% lower than students who averaged just one hour more sleep. Similarly, students who varied their bedtime by even one hour each night had grades that dropped 45% below those with more regular bedtime.
Who knows getting straight A’s just required some extra sleep?
1.Based on his original objective, which best describes Professor Gross’s research findings?
A.Accidental B.Complete
C.Convincing D.Doubtful
2.Who were the people taking part in the study?
A.Middle school chemistry students
B.Professor Gross’s own students
C.Volunteers from different universities
D.University student athletes
3.How did Professor Gross’s team measure students’ academic performance?
A.Making the students wear special watches
B.Using students’ university entrance test results
C.Giving the students regular quizzes after class
D.Using the students’ normal test and quiz grades
4.Based on the study’s findings, who is likely to perform best academically?
A.A student who has a good night’s sleep the night before an important test.
B.A student whose normal bedtime varies between 9 p.m. and 12 p.m.
C.A student who sleeps from 11 p.m. to 6 a.m. each day.
D.A student who sleeps for a total of 7 hours each night.
高二英语阅读选择中等难度题查看答案及解析
For a long time, hikers in Japan have considered a bear bell essential. Its tinny ring is said to scare off the huge creatures. Nowadays, however, bear bells are increasingly useful on the way to the shops as well as in the wild. “The number of animals whether bears, boars or monkeys- is expanding, and they are going into villages and towns,” says Hiroto Enari of Yamagata University.
Japan is home to many species of wild animals, including both black and brown bears. It's estimated that the number of bears has been rising since 2000. In 2018, the number was close to 13,000. The reappearance has its roots in human demography (人口统计学): the reduction of Japan's population is especially obvious in rural areas, where it is deeply influenced by ongoing urbanization. Usually, the bears are afraid of entering a village with people around. The appearance of bears is more seen in villages where the population is falling fastest.
Hunting is declining in Japan, too. Government data suggest that the average hunter is now 68 years old. The country's many forests and mountains provide an expansive habitat for wild animals. Indeed, wild areas are growing as foresters and farmers die off. Bears become particularly bold, running into villages for persimmon.
While some welcome the reappearance of bears, others suffer from it. Every year bears injure scores of people, and kill several. Besides, deer can cause damage to farmland. Simple solutions, such as changing the layout around villages or putting up fences, are rarely used. Instead, many bears are caught or killed. In 2013 the government resolved to reduce half the number of certain types of deer, boars and monkeys by 2023. “Japan is struggling to adapt to the changing power balance between animals and people," says Mr. Enari.
1.Why is a bear bell necessary for Japanese hikers?
A.Because it is tinny and convenient.
B.Because it can be used in the wild.
C.Because it can make special noises.
D.Because it can frighten wild animals away.
2.What makes the number of bears increasing so rapidly in Japan?
①Hunting is not as popular as it used to be.
②Bears can enter villages without people's permission.
③Japan' s population in the countryside is falling fast.
④Foresters and farmers are not allowed to kill bears.
A.①④ B.②④ C.①③ D.②③
3.The underlined word “resolved" is closest in meaning to “_________________”.
A.chose B.determined C.managed D.refused
4.What can be inferred from the last paragraph?
A.Japan is trying to balance animals with humans.
B.People are in favour of the reappearance of bears.
C.Changing the layout or putting up fences is useless.
D.The reappearance of bears is harmful to human beings.
高二英语阅读选择中等难度题查看答案及解析
For a long time hikers in Japan have considered a bear bell essential. Its tinny ring is said to scare off huge creatures. Nowadays, however, bear bells are increasingly useful on the way to the shops as well as in the wild. “The number of animals - whether bears, boars or monkeys --is expanding, and they are going into villages and towns”, says Hiroto Enari of Yamagata University.
Japan is home to many species of wild animals, including both black and brown bears. Estimates of their numbers are unstable, but since the 2000s the number of bear sightings has been rising. There were close to 1 3 , 000 in 2018 alone. The reappearance has its roots in the truth : the shrinking of Japan’s population is especially sharp in rural areas, where it is more serious by ongoing urbanization. The reducing quantity of people, in turn, has emboldened (使大胆)animals. Bears are less limited about entering villages in broad daylight if there are few folks around, Mr Enari says. Indeed, the biggest jumps in sightings have been where the population is falling fastest.
Hunting is declining in Japan, too. Government data suggest that the average hunter is now 68 years old. The country’s many forests and mountains provide an expansive habitat for wild animals. Indeed, the true wilderness is growing as foresters and farmers die off. Bears become particularly bold in years when acorns (橡实)are scarce, sneaking into orchards (果园)to steal fruits.
While some welcome their reappearance? others suffer from it. Every year bears injure scores of people, and kill a handful. Deer cause damage to farmland and speed up erosion by, for example, eating up grass. Simple solutions, such as changing the layout around villages or putting up fences, are rarely used. Instead, many bears are captured or killed. In 2013 the government decided to halve the number of certain types of deer, boars and monkeys by 2023. Japan is struggling to adapt to the changing power balance between animals and people”, says Mr Enari.
1.In Japan, what were the bear bells first used for?
A.Warning people of bears’ appearance.
B.Safeguarding the shops and villages.
C.Driving away various wild animals.
D.Scaring off bears for the hikers.
2.What can we learn from paragraph 2?
A.It is hard to see a brown bear in Japan.
B.The number of bear sightings has declined since 2000.
C.Japan’s reducing population is a main cause for bears’ reappearance.
D.Bears appear most frequently where the population increases fastest.
3.What is the other cause for wild animals’ reappearance?
A.The increase of forests. B.The decline of hunting.
C.The reduction of their habitats. D.The death of foresters and farmers.
4.What is the last paragraph mainly about?
A.The problem wild animals bring about and related measures to handle it.
B.Japanese people’s attitude to the reappearance of wild animals.
C.Methods for killing wild animals and the government’s attitude to them.
D.The wild animals’ future Japanese experts expect.
高二英语阅读理解中等难度题查看答案及解析
Women,with equal opportunities now in place,are able to choose.whatever professional path they desire.If a 9-to-5 office job isn’t your style,consider some of the fun and profitable professions available that are a little off the beaten path..
Wedding planner
While some women dream of their wedding day,others grow up to be imaginative wedding planners.Business opportunities are readily available,as more than 2 million weddings take place in the United States each year with an average spend of more than$1,000 per wedding for a wedding planner,according to The Wedding Report.
Chocolatier
If you want to have your chocolate and eat it too,consider becoming a chocolatier.Create new flavor combinations,market your product and sell it from your own store,or work for a large chocolate business and watch your creations sold to the masses.
Personal shopper
If you love to shop,particularly when you are spending someone else’ s money,then you should consider becoming a personal shopper.Personal shoppers assess their clients’ needs, lifestyles,likes and dislikes and then put that knowledge to use by purchasing their clothing and accessories.Although the job does have a few drawbacks,like fussy clients,Entrepreneur.com reports that,”mostly,it’s a pretty good time.”
Disney character
Imagine being paid to be a princess.For many women working at the Disney resorts,that is exactly what they do.The Walt Disney Company hires look-alikes to play the roles of Disney characters,like the Little Mermaid or Cinderella,at its Disneyland and Disney World resorts.
1.One can satisfy her desire for shopping by becoming a_________even if she cannot afford.
A.wedding planner B.chocolatier C.personal shopper:. D.Disney character
2.Creativity is especially needed in the professions of
A.wedding planner&chocolatier
B.chocolatier&personal shopper..
C.personal shopper&Disney character
D.Disney character&wedding planner
3.Who may be interested in the jobs in the passage?
A.Women wanting flexible working hours..
B.Men fed up with 9 to 5 office work.
C.Housewives hoping for social equality.
D.Managers advertising for employees.
高二英语阅读选择简单题查看答案及解析
The big examination is approaching. Assignments and tests will keep many of you up late at night, and you may plan to make up for your lost sleep during the weekends.1. A study shows that the habit of sleeping in on weekends doesn’t fix the damage done by a lack of sleep during the week.2.
In the study, 36 healthy young men and women with different sleep requirements were divided into three groups. The first and second groups were asked to sleep nine hours and five hours a night respectively. The members of the third group slept for five hours on weekdays, but rested as long as they wanted on the weekend.
The researchers found that people who lacked sleep ate more snacks and gained weight quickly. 3.That could be partially due to the change of the biological clock. In order to catch up on their sleep during weekends, people in the third group would habitually eat later, changing the release of hunger hormones. “4.” explained US researcher Polotsky. And even if they tried to sleep for as long as they wanted to during weekends, it was still inadequate to meet standard sleep time because they found it difficult to fall asleep.
“5.”Polotsky told CNN. “Because short, inadequate sleep schedules will lead to an in ability to change blood sugar and increase the risk of metabolic (新陈代谢的) disease in the long term. ”
For this reason, the American Academy of Sleep Medicine recommends at least seven hours of sleep each night for adults and much more for children.
A.But is it useful?
B.Do you feel excited about it?
C.Even worse,it may damage your health.
D.And these people are more likely to fall ill.
E.However,this wasn’t the case for the first group.
F.They may feel tired even after a full night’s sleep.
G.It increases appetite,so you’re hungry and eat more.
高二英语七选五中等难度题查看答案及解析
Africa is a very diverse land with many different tribes （部落）. One tradition that many of these groups share is painting or marking their bodies and faces in color. They do this for many reasons. Some marks are used to identify people as part of a group. 1. Let’s look at some different examples of body painting.
2. Among the Masai of East Africa, when men are old enough to marry and make decisions for their people, they participate in a special ceremony in which they paint their heads and faces red. This ceremony takes place every seven to fourteen years, so there is not an exact age far participating in it. The Samburu, also from East Africa, like to paint their faces and hair red because they think it looks attractive.
3. To show that he has killed a lion, a man will paint his body with a natural white material, making special marks to represent this accomplishment. The Masai men also use this white to show that they are no longer boys and are considered adults.
One quite unusual example of face painting is done by the Wodaabe people of West Africa. Once a year, they have a beauty contest for men. 4. Then they add white and black circles and lines. Black paint is used near the eyes and on the lips to draw attention to the whiteness of their eyes and teeth, which the Wodaabe consider most beautiful. 5..
As you travel, enjoy the beautiful and bright colors of Africa.
A.The men pretend to fight each other.
B.The ceremony expresses hope for rain.
C.The men paint their faces yellow and red.
D.The women then decide which man they like best.
E.The Masai men also have a unique way of showing that they are brave.
F.Other marks are used for ceremonies such as weddings and during times of war.
G.Often representing health and long life, red is the common color in body painting.
高二英语七选五中等难度题查看答案及解析
Dentzel Carousel
Our historic, restored 1921 Dentzel Carousel is located near the Fisher Family Children’s Zoo. This unique merry-go-round delights kids of all ages as they choose to ride a horse, a cat, a rabbit, or even a giraffe without considering the weather condition.
Tickets are $ 4 per person.
Adults may ride free when standing by a paid child.
Elinor Friend Playground
The newly repaired Elinor Friend Playground lights the imagination of children who is not beyond 12. This unique space is modeled after three distinct bio-regions, which take their themes from specific ecosystems and appeal to distinct age groups: a River Play Area for toddlers (6 months—2 years), a Polar Zone exploration space for pre-schoolers (2—5 years), and a Banyan Tree climbing structure for pre-teens (5—12 years).
Tickets are $ 7 per person (Free with zoo admission).
Adults pay zoo admission.
Little Puffer Miniature Steam Train
Add a ride on the historic Little Puffer miniature steam train to your visit to the San Francisco Zoo. Like generations before you, you’ll make wonderful childhood memories for your kids. Little Putter does not run in wet weather due to slippery tracks, and is closed at a regular time period for repair. Call the Zoo before your visit.
Tickets are $ 7 per person.
Children under 3 may ride free (ticket required) when accompanied by a paid adult.
(A special passenger car on the Little Puffer miniature steam train is designed to hold a wheelchair)
Zoo Keys
The ever-popular storybooks have returned to the Zoo, activated by the beloved, plastic animal keys that have become nostalgic icons to visitors from years past. At Storybook sites around the Zoo, visitors can listen to recordings of stories in different languages and fun facts about the animals in all kinds of weather conditions. You can purchase your Zoo Key at the Admissions Gate or in the Membership Office or online.
Zoo Keys are $ 5 each.
Children under 1 may ride free when accompanied by a paid adult.
1.What is special about Dentzel Carousel?
A.It has a long history. B.It has models of animals
C.It is for children of all ages. D.It has the cheapest charge.
2.What is the suggested age range of Elinor Friend Playground?
A.6 months - 2 years. B.6 months - 12 years.
C.2-5 years. D.5-12 years.
3.Which program favors the disabled?
A.Dentzel Carousel. B.Elinor Friend Playground.
C.Little Puffer Miniature Steam Train. D.Zoo Keys.
高二英语阅读选择中等难度题查看答案及解析
Chinese consumers' crazy appetite for luxury goods and services appears unstoppable, with just 2 percent of the Chinese population responsible for one-third of the world's luxury items.
As China's economic miracle develops, the market opportunities for all sorts of luxury goods and services are increasing. Luxury consumption in China now extends way beyond well - known car. Clothing and jewelry brands. For example, the luxury jet market in China is the fastest - growing in the world, even outstripping that of the United States, with a market share of 25 percent. This trend appears to continue, with 20 to 30 percent growth expected in China, compared with only 2 to 3 percent in the US. But more important, China's luxury jet market growth represents a major development in the private consumption of luxury items.
China's high - quality red wine market also provides evidence of the growth in private consumption of luxury goods. In 2013, China became the largest market for red wine in the world, even overtaking the French, with 1. 86 billion bottles consumed in China last year. Over the past five years, China's red wine consumption has grown 136 percent.
According to my ongoing consumer research in this area while working at the University of International Business and Economics in Beijing, public consumption of such expensive global luxury brands such as Prada and Armani is easily explained by the desire to "gain face" and publicly display social climbing through material possesses. On the other hand, it is "self-reward" that lies behind consumer motivation in this area. Chinese consumer, who have experienced rapid financial and economic gains appear particularly prone to the need to reward themselves for their success. But this has little to do with "gaining face" and impressing others and much more to do with the need for personal contentment.
Finally, the growth in private luxury consumption in China is set to continue in part due to the maturity of the Chinese consumer and advancement of Chinese consumer culture generally.
1.What do you think the author would most probably be?
A. A news reporter, B. An accountant.
C. A professor. D. A conductor.
2.The underlined word "outstripping" in Paragraph 2 probably means ______.
A. falling far behind of B. going hand in hand
C. going far ahead of D. keeping pace with
3.What can we learn from paragraph 2 and 3 ?
A. China's luxury jet market growth is only 2 to 3%.
B. French was once the largest market for red wine in the world before 2013.
C. The luxury jet market in the US shares 25% of the jet consumption in the world.
D. China's red wine consumption has increased to 1. 86 billion bottles since 2013.
4.What can be the best title for the passage?
A. Future Private Luxury Consumption in China
B. Chinese Appetite for Luxury Goods and Services
C. The Potential Luxury Jet Market in China
D. The Maturity of the Chinese Consumers
高二英语阅读理解中等难度题查看答案及解析
Every new parent knows that rocking can calm that uneasy baby when it’s time to take a nap. But the benefits of gentle movement may go beyond the baby stage. Because two new studies show that rocking also helps grown-ups, both human and mouse, get a good night’s sleep.
What should be no surprise is that movement can calm someone. Think of how many times you’ve fallen asleep on a train. But can motion really cause a nap, and make for a deeper sleep?
To find out, researchers invited 18 healthy volunteers for a sleepover. “So they came to the lab and slept one time on the motionless, normal bed. And one night where they got rocked.” said Aurore Perrault, a sleep researcher at the University of Geneva in Switzerland. “And what we find is that when compared to a motionless night, a whole night of rocking sleep has a beneficial effect not only on sleep beginning but also on sleep continuity. “Subjects who were rocked also did better on a memory test the next morning than the stiller sleepers.
In the second study, Kompotis, a student at the University of Lausanne, rocked a group of mice. “Whether rocking affects sleep in other species was never before discussed. So the main questions for our study were whether rocking affects sleep in mice and what is the possible system? ”
Kompotis placed the mouse cages on a platform that moved from side to side. Though mice were rocked four times faster than their human counterparts—a frequency of one back-and-forth per second, or 1 Hertz, worked best—the results were strikingly similar. “During rocking at 1 Hertz, time spent asleep increased, and mice fell asleep twice as fast as at still condition.” However, additional studies could allow the researchers to identify a new aim for treating sleep disorders, including insomnia (失眠).
If you want a good night’s sleep, you might think about adding a little swing to your night-time routine.
1.What’s the purpose of the second study in the passage?
A.To do research on the sleep system of other species.
B.To see whether rocking affects sleep of other species.
C.To discuss in which case rocking affects baby’s sleep.
D.To study the influence of rocking on sleep disorders.
2.What do we know about the mice in Paragraph 5?
A.Their sleeping time went up when rocked at 1 Hertz.
B.Their sleep disorder including insomnia was treated.
C.When rocked, they fell asleep four times faster than at still condition.
D.When rocked, they slept faster than their human counterparts.
3.What’s the best title of the passage?
A.Rocking Helps Grown-ups Sleep Too.
B.Deep Sleep Needs the Constant Swing.
C.Rocking Greatly Affects Deep Sleep.
D.Rocking Can Treat Sleep Disorders.
高二英语阅读选择中等难度题查看答案及解析