You’ve got to get an early start tomorrow, but you’re not sleepy yet. Blame your brain, at least in part. Yet that same brain is still under construction. And much of that important work takes place while you sleep. Here’s what’s happening and why it matters.
Today’s lifestyle is one reason for late bedtimes. Many teens don’t finish with after-school activities, part-time jobs, dinner, and homework until 10 p.m. or later. Add in some time for relaxing, especially time for screens, and bedtime may not roll around until 11 p.m. or nearly midnight. In response, the brain cuts back melatonin(褪黑素), a hormone that promotes sleep. Even without modern technology, though, teens change their daily cycle for sleeping, waking, and various other activities.
The rest of the world doesn’t change, however. So most teens must head to school before they’ve gotten the 8.5 to 9. 5 hours of sleep recommended by the American Academy of Pediatrics. And that’s a serious public health problem. For one thing, lack of sleep makes it harder to pay attention. When studies compared teens who had earlier and later school start times, they found that those who had more time to sleep did better in class. They also suffered fewer accidents in sports, driving, and other activities. Lack of sleep could also hurt mental health. Studies have found an inverse correlation(负相关)between teens’ amount of sleep and depression and other mental illnesses. As sleep time went down, the risks for the mental illnesses went up. Beyond that, teens lacking in sleep report more relationship problems and feelings of inadequacy.
Lots of issues remain for sleep researchers to explore. For now, though, studies are clear:Teens’ brains need sleep.
1. Teen’s lifestyle today most likely leads to _______.A.the change of daily cycle |
B.the rise of melatonin release |
C.the growth of relaxing time |
D.the decrease of technology use |
A.poorer concentration | B.lower illness risk |
C.stronger relationship | D.greater emotional change |
A.sleep issues are extremely hard to solve |
B.school time is generally impossible to adjust |
C.enough sleep is clearly beneficial to teens’ health |
D.the brain is chiefly responsible for teens’ sleep problems |
相似题推荐
【推荐1】Many people do not fully understand what self-care means. So they may view self-care as a form of selfish behavior.
Take regular exercise.
It’s important to listen to your body and take a break.
Discover the source of your stress.
Make a list of things that cause your stress in all ways of your life.
Money matters can be a significant source of stress and anxiety. But practising financial self-care through planning and budgeting can help to lessen this burden. No, it’s not as fun as treating yourself on payday, but creating a budget and sticking to it can enable you to take control of your financial wellbeing.
A.Manage your finance. |
B.Perfect oneself by any means necessary. |
C.The next step is to do your best to avoid them. |
D.However, don’t let every day become a rest day! |
E.After completing these three steps, you can begin to make a plan you can work on. |
F.But in fact, the act of caring for oneself is an important part of a person’s wellbeing. |
G.Self-care is a lifestyle that enables you to ensure your wellbeing now and for years to come. |
【推荐2】Keep Sight of Dry Eye
Do your eyes feel uncomfortable or dry? If so, you might have dry eye syndrome (综合征).
In the past, dry eye syndrome was mainly a condition experienced by older adults, but it now affects many young people as well. Dry eye often results from overuse of computers or smartphones, which causes the user to blink (眨眼) less. Since blinking helps keep our eyes wet, a lack (缺少) of it can lead to dry eye.
If you suffer from dry eye syndrome, these steps can go a long way toward making your eyes feel better. However, if the problem doesn’t go away, then it’s time to see a doctor.
A.After all, your health is worth keeping an eye on. |
B.Blinking can help protect the surface of your eyes. |
C.This happens when you don’t produce enough tears. |
D.Air-conditioning and fans also contribute to dry eye. |
E.Limit screen time and take breaks from staring at screens. |
F.Treatments for dry eyes can include eye exercises and eye drops. |
G.All it takes is a few lifestyle changes to prevent and treat dry eye syndrome. |
【推荐3】For centuries, people in the sunny Mediterranean (地中海) would get up after long, relaxing meals and take a walk, often to the town square to see neighbors and socialize. Walking is so much a part of the lifestyle that it is seen as the most important part of the super-healthy Mediterranean diet.
Studies have found that it may be one of the reasons the Mediterranean diet can reduce the risk for some diseases like diabetes, high cholesterol, heart disease, stroke and some cancers — all the while strengthening bones, improving brain health, preventing dementia(痴呆) and helping with healthy weight loss.
Now you can add another reason to take a post-meal walk — it may lower your blood sugar. That trip doesn’t need to take up a huge amount of your time either: Walking as little as two to five minutes after a meal can do, according to a 2022 study in the journal Sports Medicine.
Standing after a meal can help, too, but not as much as putting one foot in front of the other, said study coauthor Aidan Buffey, a doctoral student in sport sciences department at the University of Limerick in Ireland.
“Standing on and off throughout the day and after meals reduced blood sugar on average by 9.51% compared to long hours of sitting. However, light-walking throughout the day saw a greater reduction of blood sugar by an average of 17.01% compared to long hours of sitting,” Buffey said.
“This suggests that breaking long hours of sitting with standing and light-walking throughout the day is good for blood sugar levels. Standing is good, but walking is better,” he added.
1. What is the purpose of Paragraph 1?A.To introduce a lifestyle. | B.To warn the readers. |
C.To lead in the topic. | D.To prove an opinion. |
A.Losing appropriate weight | B.Making bones stronger |
C.Preventing the risk for diseases | D.Improving brain health |
A.By doing surveys (调查). | B.By comparing the data(数据). |
C.By doing experiment. | D.By referring to other studies. |
A.Walking can help lower blood sugar | B.There are reasons to stick to walking |
C.Mediterranean diet is super healthy | D.Long hours of sitting after meal is a bad habit |
【推荐1】Approximately one-third of all textiles (纺织品) are produced from mineral resources and are ill-suited for recycling. “In the fashion industry, a great deal of clothing is produced much too cheaply, and is of such a poor quality that people desert it after wearing it just a few times. The majority of the deserted textile is unsuited for sale as second-hand textile,” says Pauline Harmsen, a senior researcher of Wageningen University & Research.
Much of our clothing contains materials made from fossil (化石的) resources such as oil. This applies to some two-thirds of all the clothing produced in the world. Nevertheless, things must change in the future. Not only is the supply of fossil resources becoming depleted, but much of the contemporary textiles also cannot be recycled.
In clothing recycling, we see textiles being produced from recycled bottles. Textile recycling is often difficult. This is because textiles are made up of different fibres that are difficult to separate. “If you really wish to recycle, you must start by considering the clothing production method. By designing clothing in such a way that the different materials can be easily separated, or by using just one type of fibre,” says Harmsen.
A programme for sustainable (可持续的) textiles was launched in Wageningen University & Research last year. Various researchers from different institutes are involved, from technical material experts such as Harmsen to consumer scientists. It will take a while before sustainable clothing made from natural resources finds the way into the fashion stores.
Harmsen’s dissatisfaction with clothing offered in stores has led her to make her own clothing from fossil-free resources. She focuses on sustainability but also on the material’s look and feel. She claims, “Eventually, we will need all available natural resources to fill the gap if we are no longer able to use fossil resources.”
1. What can we learn about the fashion industry from paragraph 1?A.It creates huge waste. |
B.It faces expensive material. |
C.It lacks realistic demand. |
D.It causes public resistance. |
A.Very inconvenient. | B.Almost unusable. |
C.Severely short. | D.Rather cheap. |
A.Employing advanced equipment. |
B.Increasing production procedures. |
C.Mixing pure natural materials. |
D.Adopting single-fibre materials. |
A.Basic Methods of Textile Production |
B.A Trend of Sustainable Consumption |
C.Fossil-Free Textiles for Clothing |
D.Breakthrough of the Clothing Industry |
【推荐2】The world’s hottest rainforest is located not in the Amazon or anywhere else you might expect, but inside Biosphere (生物圈) 2, the experimental scientific research facility in the desert outside Tucson, Arizona. A recent study of tropical trees planted there in the early 1990s reported a surprising result: They have withstood temperatures higher than any likely to be experienced by tropical forests this century.
The study adds to a growing number of findings that are giving forest scientists something that’s been in short supply lately : hope. Plants may have unexpected resources that could help them survive — and perhaps even prosper — in a hotter, more carbon-rich future. And while tropical forests still face both human and natural threats, some researchers believe terrible reports of their approaching decline due to climate change may have been overstated.
“Biology is clever, ”says Scott Saleska, an ecologist at the University of Arizona in Tucson and co-leader of the Biosphere 2 study. “It’s a lot smarter than our models yet represent.”
The last few years have seen a flood of alarming reports about forests and climate change’s effects on them. Scientists have announced that the Amazon forest is no longer a reliable carbon sink; the Amazon rainforest may be nearing a tipping point; tropical forests globally are already close to the hottest temperatures they can tolerate and climate change is killing off old trees.
One thing is certainly true: Our fossil fuel emissions are creating a climate that humans have never seen and trees haven’t experienced in a very long time.“We’re pushing tropical forests into temperatures they’ve never seen since the Cretaceous — since there were dinosaurs,” says Abigail Swann, an ecologist and climate scientist at the University of Washington in Seattle.
1. Where is the hottest rainforest located according to the article?A.In the Amazon tropical forest. | B.In a research facility in Arizona. |
C.In the rainforest in Brazil. | D.At the University of Arizona. |
A.Forest scientists still lack numbers of findings about rainforest. |
B.Plants may not survive in hot and carbon rich future than expected. |
C.Plants may survive in hotter and more carbon-rich environment. |
D.People may overstate the climate change in the future. |
A.We have never seen the climate change due to greenhouse. |
B.The fossil fuel emissions may destroy the whole ecosystem. |
C.The temperatures may reach as high as those in dinosaur period. |
D.The fossil fuel emissions may create a climate plants can’t bear. |
A.The world’s hottest rainforest in the wild |
B.Plants may die of fossil fuel emissions due to mankind |
C.The Amazon forest is declining quickly in the future |
D.Plants may stand hotter temperature than expected |
【推荐3】Many people discover Roald Dahl through his stories and poems. His books have been translated into several languages. He has also inspired TV and radio shows and movies. With his help, kids all over the world can imagine strange candies, friendly giants, and frightening villains (反派主角). Indeed, Roald Dahl led a life full of adventures (冒险). Yet, we can have a better understanding of him from other things, too.
More than Just Words: The Roald Dahl Foundation
Roald Dahl became interested in helping people who had serious injuries and diseases. As a writer, Roald cared about helping children read more. To carry out these goals, his family set up the Roald Dahl Foundation. The foundation helps people, hospitals, and charities by giving money for medical and educational needs. It continues the spirit of giving that Roald expressed throughout his life.
Stories for All Ages: The Roald Dahl Museum and Story Centre
Roald Dahl’s wife, Felicity Dahl, wanted to set up a central place to protect all of Roald’s writings. She helped create the Roald Dahl Museum and Story Centre in Buckinghamshire, England. It holds a collection of Roald’s writings and recordings for the public to visit. His personal letters and postcards can be found there, as well as photographs and many of his awards. As you can see, one can get a pretty complete picture of Roald Dahl’s life by visiting this library. The museum also encourages people to write creatively.
Now, people of all ages are learning about Ronald Dahl through his works. Through his stories, the foundation, and the museum, Roald Dahl will continue to have a great effect on readers around the world for years to come.
1. It can be inferred that Roald Dahl ________.A.produced many movies |
B.mastered several languages |
C.travelled to many countries |
D.wrote many adventurous stories |
A.was set up by Roald Dahl |
B.employs many famous doctors to cure diseases |
C.helps sick kids read useful books |
D.helps people or organisations for free |
A.attract public visits |
B.keep Roald Dahl’s works |
C.show Roald Dahl’s awards |
D.give lessons about writing |
A.Disappointed. | B.Respectful. |
C.Indifferent. | D.Cruel. |
【推荐1】Which country can you travel to in 2020 that will allow you to go for longer, enjoy a higher standard, and save more money? The following destinations offer accommodation, transportation, and food for less.
Kyrgyzstan, $25/day
Kyrgyzstan is the choice for most travelers interested in trying out Central Asia, and most well-suited to travelers of all budgets. Food is cheap, so is getting around using the minibuses. You can find hostels and local home stays for less than $10. Meals cost $4 – $8 per day.
Romania, $33/day
If you are planning a European trip that’s affordable and a little bit off the beaten path, Romania is perfect for you. Unlike other popular places, many charming towns here remain unknown to most foreigners. You can also take free walking tours in the numerous historical sites. Hostels run $10 – $15 per night, food is hearty and delicious, and the public transportation is reliable and affordable. Meals cost $10 – $15 per day.
Arizona & Utah, $55/day
For an American Southwest road trip, you’ll spend an average of $110/day when you are solo. If you have just one other person, you’d be able to split the costs almost perfectly in half. If you have two other people along, take it down to one third and so on. The more the merrier.
South Africa, $40/day
Any hostels in South Africa are in beautiful settings and each has a unique personality, and affordable too. Food can get expensive. To save money, cook your own food. Grocery stores are plentiful and have reasonable prices. By at least cooking your own breakfast, you can save a lot of money. The best (and possibly cheapest) way to get around the country is to rent a car and share with 3 other people. Meals cost $12 – $15 per day.
1. What makes Romania different from the other places?A.Nice hostels. |
B.Delicious food. |
C.Less-visited towns. |
D.Cheap transportation. |
A.Drive your own cars. |
B.Cook your own lunches. |
C.Stay in excellent hotels. |
D.Find unique travel partners. |
A.They’re famous for historical places. |
B.They’re the best places for travelling. |
C.They have convenient public transportation. |
D.They’re good travel choices for saving money. |
【推荐2】Austin Perine, a four-year-old boy, discovered that sympathy for the less fortunate can produce superhuman results.
Once Austin’s father, TJAustin, took Austin to the Firehouse Ministries, a local shelter that provides housing, food, and other services for homeless men. As they drove by the redbrick building, they saw a group of 25 homeless men standing on the street corner. “Dad, they look sad,” Austin said. “Can we take them some food and make them smile?”
That day, Austin used his allowance to buy each man a Burger King sandwich and handed the food out himself.
Seeing what their presence meant to the men at the ministry, Austin and TJ returned the next week. After he returned every week for five weeks, word of Austin’s acts of kindness spread through social media and national news outlets. Burger King jumped aboard, agreeing to donate $1,000 a month for an entire year toward the cause. Soon, churches and shelters across the country began inviting Austin to come and distribute food in other poor areas. Whereas before Austin and TJ could feed 25 to 50 people at a time, now, thanks to corporate and community support, they can feed 800 to 2,000 people at once.
But Austin isn’t just filling bellies. He’s improving the lives of those he meets. On that first trip to Firehouse Ministries, TJ and Austin talked to a man named Raymont.The respect Austin gave 41-year-old Raymont touched the man. TJ helped Raymont collect all the credentials(资格) he needed to get a driver’s license. The license helped Raymont get a job. And with money in the bank, he was able to rent his own apartment. All that was made possible because a little boy took the time to care.
1. Why did Burger King agree to donate?A.Austin invited it to. |
B.It wanted to be famous. |
C.Churches and shelters encouraged it to. |
D.It was affected by Austin’s acts of kindness. |
A.give out | B.spread out |
C.send goods | D.sort out |
A.He could drive. |
B.He made a big fortune. |
C.He could make a living by himself. |
D.He bought an apartment of his own. |
A.He wants to fill bellies. |
B.He makes the homeless live better. |
C.He shows little concern for the poor. |
D.He likes buying sandwiches for the homeless. |
【推荐3】Vegetable gardens may not be as visually pleasing as the variety of flowers, but Floridians looking to save some green by growing their own salad fixings can soon do so without fear. Gov. Ron DeSantis this week signed a law that bans local governments from carrying orders against homeowners from raising veggies in their yards.
The law, which takes effect July 1, puts an end to that particular power of towns and cities across the state to prohibit vegetable gardens for “aesthetic(审美的)purposes”.
The issue became a cause after a couple living in Miami Shores Village opposed the decision of a $ 50 a day fine for growing vegetables in their front yard, as they’d done for years.
Hermine Ricketts and her husband Tom Carroll fought City Hall in a case that wound its way up the state’s court system, with judges consistently ruling against their money-saving and health-conscious project.
After the Florida Supreme Court ruled in favor of Miami Shores’ right to control design and landscaping standards, the couple replaced their vegetables with pink flamingos (红鹳花) .
Their cause was not lost, however. State lawmakers proposed and passed a law that effectively voids the court rulings, with Rob Bradley, who sponsored the bill, reportedly calling the village’s action a “vast overreach”.
The lawmaker noted the difficulty that many families experience getting fresh and affordable food, calling bans against vegetable and fruit gardens ridiculous.
About a third of all households in the U. S. grow some of their own food, according to the National Gardening Association. The group says a 600-square-foot garden that costs around $ 70 a year to keep can grow 300 pounds of fresh produce worth about $ 600 annually.
1. Why will some Floridians plant salad fixings?A.To protect the environment. | B.To beautify their home. |
C.To build their own gardens. | D.To cut daily expenses. |
A.They started a public health-conscious campaign. |
B.They never gave in to the Miami Shores’ demand. |
C.They paid a $50 daily fine to Miami Shores Village. |
D.They were not backed by the Florida Supreme Court. |
A.It’s sensible. | B.It’s ridiculous. |
C.It’s ambitious. | D.It’s costly. |
【推荐1】According to a recent report, about 15% of the people in the UK are members of gyms. But are they more likely to be fit?
A study found that gym members were 14 times more active than people who didn’t belong to any health club. Gym members did six hours more exercise a week, and this activity did make them fitter than non-gym members. They also spent less time sitting down every day than non-gym members. The results were the same for men and women.
The study included 405 people between the ages of 30 and 64, and the main characteristics of those who were gym members were the same as those who were not. ''But gym members did more training than non-gym members, '' said the lead author, Elizabeth Schroeder of the University of Illinois.
While it might seem clear that gym members exercising more are healthier than non-members, Schroeder says this has not been directly shown before. However, the study is only designed to show a tie between gym membership and more exercise. It may be that active people like to join gyms. In the study, people who exercised as much as gym members were also in good health.
You can get the same benefits wherever you exercise. This study shows a gym membership can make you do more exercise, but other research shows that exercising outside has other help. Outdoor activities can make you feel happy about life—especially if you run through a forest.
Outdoor exercise is also more enjoyable than going to the gym. The first five minutes of outdoor exercise is especially helpful in making people feel good. But Schroeder says that a gym may also encourage greater exercise because it can be social and fun.
1. What did the new study find out?A.Gym members had healthier eating habits. |
B.There were fewer women gym members than men. |
C.Gym members did at least eight hours of exercise a week. |
D.Gym members were more active than non-gym members. |
A.some sports lovers |
B.405 gym members |
C.people from different age groups |
D.30 gym members and 64 non-gym members |
A.Women should do more gym exercise. |
B.We should be careful with outdoor training. |
C.Outdoor exercise is better than gym exercise. |
D.It is easier to keep exercising if you go to the gym. |
【推荐2】The sudden death of the 23-year-old female emplovee of Pinduoduo has sparked a heated debate, with many criticizing the overwork culture. Three experis share their views. Excerpis (节选) follow:
Labor laws compatible (兼容的) with digital era needed
This case should inspire society to reflect on how to better protect employees’ rights in the digital era. The relevant clauses in the Labor Law cannot be specifically applied to charge internet companies suspected of violating laborers' rights and interests.
The blurring (模糊) of the line between social and economic activities in the digital era makes it difficult to define fixed working hours.
Lawmakers should find out the new factors affecting labor relations due to the rapid development of internet and communications technology. This can pave the way for law-making on working hours in the digital era. “996” working schedule is against labor laws.
More than one year ago, it was shocking to hear e-commerce tycoons (巨头) Liu Qiangdong and Jack Ma publicly support the "996" working schedule to push their employees to work harder. A growing number of companies have been using different methods to exercise ever-increasing control over their employees.
To correct the situation, it is vital that the country bring in specific law on internet enterprises, especially in terms of labor contracts and work schedules, and make it clear that the “996” working schedule is illegal.
Death due to overwork needs legally definition
Work pressure and long working hours can seriously affect workers' physical and mental health, making. them more easily hurt by occupational and stress-related diseases.
But it is difficult to prove that a person dies of overwork. Only a person who dies at the workplace or of a sudden illness within 48 hours of getting off work is considered a victim of work.
China should issue guidelines explaining in detail what leads to death due to overwork.
1. What do the three experts agree on?A.The Labor Law in China is non-effective. |
B.It is difficult to define fixed working hours. |
C.Supervision on companies should be tightened. |
D.Improvement should be made to the current laws. |
A.To highlight the models of e-commerce. |
B.To introduce tycoons' attitudes to overwork. |
C.To confirm their efforts to protect employees. |
D.To express disagreement on “996” working schedule. |
A.To make somebody anxious. | B.To do sports or other physical activities. |
C.To use your power to achieve something. | D.To test or make experimental use of something. |
A.Someone dies on his way to office. | B.Someone dies of a heart attack in his office. |
C.Someone dies three days after work. | D.Someone dies after work without symptoms. |
【推荐3】A punctual (准时) person is in the habit of doing a thing at the proper time and is never late in keeping an appointment.
The unpunctual man, on the other hand, never does what he has to do at the proper time. He is always in a hurry and in the end loses both time and his good name. A lost thing may be found again, but lost time can never be regained. Time is more valuable than material things. In fact, time is life itself. The unpunctual man is forever wasting and mismanaging his most valuable things as well as others. The unpunctual person is always complaining that he finds no time to keep appointments, answer letters, or return calls promptly.
A punctual person can be very busy and really has a great deal to do. What is different is that he is very careful of his time and seldom complains of shortage of it. He knows that he cannot get through huge amount of work unless he faithfully deals with every piece of work when it has to be attended to.
Failure to be punctual in keeping one’s appointments is a sign of disrespect towards others. If a person is invited to dinner and arrives later than the appointed time, he keeps all the other guests waiting for him. Usually this will be regarded as a great disrespect to the host and all other guests present.
Unpunctuality, moreover, is very harmful when it comes to doing one’s duty, whether public or private. Imagine how it would be if those who are put in charge of (负责) important tasks failed to be at their proper place at the appointed time. A man who is known to be habitually unpunctual is never trusted by his friends or fellow men.
1. The correct description of an unpunctual person is that ________.A.he always does things at the right time |
B.he is always very busy doing things |
C.he can’t do things when they should be done |
D.he complains of having no letter to answer |
A.losing good name | B.losing health |
C.losing trust from others | D.losing the best time of doing things |
A.eventually | B.kindly |
C.patiently | D.immediately |
A.has lots of things to deal with |
B.is very careful with time |
C.is never short of time |
D.gets through his work quickly |
A.arrive at the appointed time | B.arrive before all other guests |
C.arrive after all other guests | D.keep all other guests waiting |
A.Time: Most Valuable |
B.Lost Time: Never to Be Regained |
C.Being Punctual: a Meaningful Lifestyle |
D.Being Unpunctual: Harmful to Others and Yourself |