The brain function of very late risers and “morning larks(早睡早起的人)” during the hours of the working day is different, according to a study.
Researchers scanned the brains of night owls(夜猫子)with a bedtime of 02: 30 and awake time of 10: 15, along with early risers. The tests performed between 08 : 00 and 20 : 00 found night owls had less connectivity in brain areas linked to keeping consciousness. They were more likely to be scatterbrained and they also had slower reactions and increased sleepiness.
Scientists took 38 people who were either night owls or morning larks (people who went to bed just before 23 : 00 and woke at 06 : 30) and studied their brain function at rest. The volunteers then carried out a series of tasks at various times, from 08 : 00 to 20 : 00, and were asked to report on their levels of sleepiness.
Morning larks were least sleepy and had their fastest reaction time in the early morning tests. They were also found to perform significantly better at this time than night owls. In contrast, night owls were least sleepy and had their fastest reaction time at 20 : 00, although they did not do significantly better than the larks at this time.
The brain connectivity in the areas that predicted better performance and lower sleepiness was significantly higher in larks at all time points, suggesting connectivity in late risers is impaired(减弱的) throughout the whole working day, researchers said.
The lead researcher, Dr Elise Facer-Childs, of the University of Birmingham’s Centre for Human Brain Health, said the findings “could be partly driven by the fact that night owls tend to compromise throughout their lives.” He added, “Night owls during school have to get up earlier, then they go into work and they have to get up earlier, so they’re constantly in conflict.”
Therefore, Dr Facer Childs called for more researches to understand the effects of night owls performing on a work or school schedule to which they are not naturally suited.
1. Which of the following can replace the underlined word “scatterbrained” in Paragraph 2?A.Unfocused. |
B.Satisfied. |
C.Recognized. |
D.Discovered. |
A.Morning larks were more tired in the morning. |
B.Night owls were more active in the morning. |
C.Morning larks perform better all day. |
D.Night owls perform better all day. |
A.The workings of their brain. |
B.The effects of their compromises. |
C.Whether they can turn into morning larks. |
D.How to help them adapt to the normal schedule. |
A.To solve a problem. |
B.To give practical advice. |
C.To tell an interesting story. |
D.To present a research result. |
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【推荐1】How to Automate New Habits So That You’ll Keep to Them
Anyone who’s tried to add something new to their routine knows one thing: Building new habits isn’t easy.
The good news: There’s a solution, and it’s called automation.
That sounds easy.
“As you’re engaging in gradual steps toward your goals, you may quickly start to experience feelings of accomplishment and pride that you’re making the changes you wanted to make,” she says. “Those positive feelings are forms of reinforcement, and you are more likely to continue doing things that reinforce you.”
Along with its positive reinforcement, automation emphasizes the impact of small changes in making a big difference. Though we all love the major successes, the small changes along the way are what get us there in the first step.
Louis also explains that although you should pick a behavior that occurs frequently enough to maximize the opportunities to build towards your goal, try not to choose an already existing behavior that occurs too often-like checking your phone or drinking of water. “You might not even realize you’re doing it, and may then miss a lot of chances to perform the new habit,” she says.
A.Find your auto habits. |
B.It takes time and insistence. |
C.But it turns out to be efficient while trying. |
D.Consider auto habits that occur at times or places. |
E.It’s the small steps that fuel your motivation and self-belief. |
F.It is when you add what you’d like to be your new habit onto an existing habit. |
G.Building a new habit requires strong mind to help the process go along smoothly. |
【推荐2】Why You Should Always Store Apples in the Fridge
To fridge or not to fridge? Have you discovered what foods you should take out of your refrigerator and what unexpected items you should store there?
Apples require a little bit of coolness in order to stay fresh in storage for a longer period of time. Cool temperatures alone are often enough to keep your apples fresh for weeks. Keeping apples in a basket in your kitchen is a good visual reminder to get your doctor-recommended one a day. As it turns out, though, storing apples on your countertop could cause them to go bad weeks sooner than if you put them in the fridge.
If you’re not planning on eating all your apples within a few weeks, you might want to consider the variety you buy.
A.How cold? |
B.How to store apples? |
C.Let’s take apples for example first. |
D.Once apples are ripe, they easily go bad. |
E.So what’s the best place to store your apples? |
F.Usually, at room temperature, apples last about a week. |
G.The smaller the apple, and the thicker the skin, generally the longer it will store. |
【推荐3】Colour saturation(饱和) refers to the intensity(强度) of the reds, greens and blues. Photos high in colour saturation make food look fresher and tastier to viewers, which increases their willingness to order the menu items, a new study suggests. “In the restaurant business, these results provide a simple method to increase sales,” said Stephanie Liu, lead author of the study and associate professor of hospitality management at the Ohio State University. “On Instagram, it means using the ‘X-Pro Ⅱ’ filter(滤镜) on your food photos rather than the ‘Early bird’ filter. It costs nothing, so it’s an easy win for restaurant marketers.
In one survey, 267 participants were asked to imagine themselves looking through options on an online food-ordering platform. They were shown photos of a poke bowl, a Hawaiian dish featuring fish, vegetables and sauce over rice. They were randomly asked to view one of the four different photos with either high or low colour saturation and either close or farther away visual distance. The food in the more highly-saturated photos looked fresher and tastier to participants, and that led them to be more likely to purchase the food. But colour saturation had a stronger effect when the food appeared more distant in the photos. “When the food is shown close up, it’s already easy for the viewers to imagine how fresh and tasty the food would be,” Liu said. “Colour saturation is not as necessary.”
In the second survey, 222 online participants were asked to imagine they were looking through photos of pizza from a restaurant near their home. They were told they would either be eating alone or with their family. As in the previous study, the food in the colour-saturated photo was always seen as fresher and tastier and one that people would be more likely to buy. But that effect was stronger for people who were told they would be eating alone. “When people are eating with others, the social experience is a big part of what people look forward to,” Liu said. “But when they are eating alone, they focus more on the food itself.”
“These findings are more important now than ever before,” Liu said. “With people ordering online, restaurants have to post pictures of their food on online ordering platforms. They should pay more attention to the photos they post as they do to the text. Colour saturation is one key element they need to focus on.”
1. What is a direct effect of the “X-Pro Ⅱ” filter according to Stephanie Liu?A.Strengthening the “Early bird” filter. |
B.Keeping colour saturation low. |
C.Making food in photos more appealing. |
D.Increasing the variety of menu items. |
A.When the food appears farther to the observer. |
B.When the poke bowl contains more food. |
C.When the food is fresher and tastier in reality. |
D.When the visual distance of the food is shorter. |
A.They take social experience into consideration. |
B.They choose food that is easier to obtain. |
C.They want the food to be fresher and tastier. |
D.They pay more attention to colour saturation. |
A.How Colour Speaks for Menu Items Online |
B.How Colour Saturation Affects People |
C.How Colour Brings Benefits to Ordering Platforms |
D.How Colour in Photos Makes Food Look Tastier |
【推荐1】Industrial agriculture is often held up as the solution to feeding the world’s growing population. But small farms of about 25 acres or less produce over 70 percent of the world’s food. To raise awareness of the contribution of these farmers, a global photo exhibition, We Feed the World, is to open on October 12 in London.
“Industrial agriculture, which mainly focuses on a few types of crops, is not the only answer,” says art director Francesca Price. “We want these images to empower people to support their local food system.”
By growing traditional and non-commercial varieties, small farms support biodiversity and increase food security. With only 12 plants and five animal species making up 75 percent of what the world eats, food systems will be easily hurt by natural disasters and disease outbreaks. However, traditional farming communities are working to preserve their ancient seed diversity.
Keeping variety alive is very important in the face of climate change. In the future, researchers might need to get particular genes from one variety to help another to adapt to warmer, stormier, or drier weather, or to save a prized variety from disease.
Contrary to the false impression held by the public, small farms that practise traditional agriculture can be highly productive. Studies show that the output of crops rises when there’s a wider diversity of crops being grown on a farm, and money is saved since the need for harmful fertilizer and other chemicals is reduced.
“The photographs of family farmers may tell just a few local stories, but the message is universal,” says photographer Cheryl Newman. “I hope that the images will leave viewers thinking deeply about where their food comes from and the impact it has on the world around us.”
1. What is the purpose of the photo exhibition?A.To help small farmers to sell their produce. |
B.To show the challenges faced by small farmers. |
C.To draw attention to small farmers’ contribution. |
D.To help farmers to fight against industrial agriculture. |
A.It produces more food than small farms in total. |
B.It harms biodiversity and decreases food security. |
C.It has been competing unfairly with small farms. |
D.It is the only way to feed the world’s population. |
A.Their genes are much better. |
B.Their output is much higher. |
C.They may help improve the other crops. |
D.They don’t need chemical fertilizers at all. |
A.The importance of traditional small farms. |
B.The problems with the industrial agriculture. |
C.The consequences of fast-growing population. |
D.The impact of climate change on agriculture. |
【推荐2】Why can’t we stop longing for the good old days?
People in many countries are longing for the good old days. But when exactly were the good old days? Podcaster Jason Feifer devoted an episode of his program to this question. The most popular answer seemed to be the 1950s, so Mr. Feifer asked historians whether Americans in that decade thought it was particularly pleasant. Definitely not. In the 1950s, American sociologists worried that rampant individualism was tearing the family apart. There were serious racial and class tensions, and everyone lived under the nuclear threat.
In fact, many in the 1950s thought that the good old days were to be found a generation earlier, in the 1920s. But in the 1920s, child psychologist John Watson warned that because of increasing divorce races, the American family would soon cease to exist. Many people at the time idealized the Victor inn era, when families are strong and children respected their elders.
Why are human beings always so nostalgia for past eras that seemed difficult and dangerous to those who lived through them? One possibility is that we know we survived past dangers, so they seem smaller now. But we can never be certain we will solve the problems we are facing today. Radio didn’t ruin the younger generation, but maybe the smart phone will.
Another reason is that historical nostalgia is often colored by personal nostalgia. When were the good old days? Was it, by chance, the incredibly short period when you happened to be young? A U.S. Poll found that people born in the 1930s and 1940s thought the 1950s was America’s best decade, while those born in the 1960s and 1970s preferred the 1980s.
This kind of nostalgia has neurological roots. Researchers have found that we encode more memories during adolescence and early adult hood than any other period of our lives, and when we think about the past, this is the period we most often return to. Moreover, as we grow more distant from past events, we tend to remember them more positively.
Obviously, some things readily were better in the past. But our instinctive nostalgia for the good old days can easily deceive us, with dangerous consequences. Longing for the past and fear of the future inhibit the experiments and innovations that drive progress.
Vaccination, steam engines, railroads and electricity all met with strong resistance when they were first introduced. The point isn’t to show how silly previous generations were. The same kinds of anxieties have been expressed in our own time about innovations like the internet, video games and stem-cell research.
And not all fears about the future are unbounded. New technologies do result in accidents, they disturb traditional cultures and habits, and they destroy old jobs while creating new ones. But the only way to learn how to make the best use of new technologies and reduce risks is by trial and error. The future won’t be perfect, but neither were the good old days.
1. The word “rampant” in paragraph 1 is closest in meaning to ________.A.limited | B.reasonable |
C.uncontrolled | D.traditional |
A.when American families still remained strong and children respected their elders |
B.that saw a sharp increase in individualism and divorce rate in American society |
C.that was believed by Americans born in the 1930s and the 1940s to be the best decade |
D.when radical and class tensions became more serious but people no longer lived under the nuclear threat |
A.The current generation is not as silly as the previous generations. |
B.It is unwise to be simply opposed to any new inventions and technologies. |
C.People are constantly deceived by their instinctive nostalgia for the good old days. |
D.The internet, video games and stem-cell research pose great threats to humanity. |
【推荐3】In patients with metabolic(新陈代谢的) diseases, elevated(升高的) fat levels in the blood create stress in muscle cells-a reaction to changes outside the cells that could damage their structure and function. Researchers have discovered that these stressed-out cells could give off a kind of signal.
The signals, known as ceramides(神经酰胺), may have a protective benefit in the short term because they are part of a mechanism(机制) designed to reduce stress in the cells. But in metabolic diseases, which are long-term conditions, the signals can kill the cells, make symptoms severer, and worsen the illness.
Increased fat in the blood has long been known to damage tissues and organs, contributing to the development of cardiovascular(心血管的) and metabolic diseases, including type 2 diabetes(糖尿病). The condition can be caused by obesity(肥胖), rates of which have increased greatly worldwide since 1975. In 2016, there were more than 650 million adults aged 18 and above with obesity.
Rescarch supervisor Lee Roberts said, “Our discovery may form the basis of new approaches to preventing the development of cardiovascular and metabolic diseases, such as diabetes in overweight people with elevated blood fat.”
In the lab, the team copied the blood fat levels observed in humans with metabolic diseases by exposing certain muscle cells to a fatty acid. The cells began to pass on the ceramide signal. When these cells were mixed with others that had not been previously exposed to fat, the researchers found that they communicated with each other, transporting the signal in packages called extracellular vesicles. The experiment was reproduced in human volunteers with metabolic diseases and got comparable results.
Professor Roberts said, “The research gives us a novel perspective on how stress develops in the cells of individuals with obesity, and provides new ways to consider when we’re trying to develop new treatments for metabolic diseases. With obesity becoming an increasingly widespread disease, the burden of associated chronic(慢性的) diseases, such as type 2 diabetes, necessitates new treatments. We hope the results of our research open a new avenue for research to help address this growing concern.”
1. What is special about ceramides?A.They are released by healthy cells. |
B.They are harmful to cells in the long term. |
C.They are designed to reduce the fat levels in the blood. |
D.They are beneficial to the treatment of metabolic diseases. |
A.The difficulty of dealing with obesity. |
B.The consequence of chronic diseases. |
C.The general health condition of young people. |
D.The increasing rates of obesity around the world. |
A.It aimed to find the cause of metabolic diseases. |
B.It identified a new cell in volunteers with obesity. |
C.It proved stressed-out cells could affect healthy cells. |
D.It indicated cells’ communication patterns for the first time. |
A.How cells respond to the stress from high blood fat. |
B.How our body distinguishes stressed-out cells from others. |
C.How muscle cells communicate with each other effectively. |
D.How our body starts the self-protection system to repair cells. |
【推荐1】At the start of the 20th century, an American engineer named John Elfreth Watkins made predictions about life today. His predictions about slowing population growth, mobile phones and increasing height were close to the mark. But he was wrong in one prediction: that everybody would walk 10 miles a day.
Today, in Australia, most children on average fall 2, 000 steps short of the physical activity they need to avoid being overweight. In the early 1970s, 40 per cent of children walked to school, while in 2010, it was as low as 15 percent.
The decline is not because we have all become lazy. Families are pressed for time, many with both parents working to pay for their house, often working hours not of their choosing, living in car-dependent neighborhoods with limited public transport.
The other side of the coin is equally a deprivation: for health and well-being, as well as lost opportunities (机会) for children to get to know their local surroundings. And for parents there are lost opportunities to walk and talk with their young scholar about their day.
Most parents will have eagerly asked their child about their day, only to meet with a “good”, quickly followed by “I’m hungry”. This is also my experience as a mother. But somewhere over the daily walk more about my son’s day comes out. I hear him making sense of friendship and its limits. This is the unexpected and rare parental opportunity to hear more.
Many primary schools support walking school-bus routes (路线), with days of regular, parent-accompanied walks. Doing just one of these a few times a week is better than nothing. It can be tough to begin and takes a little planning-running shoes by the front door, lunches made the night before, umbrellas on rainy days and hats on hot ones-but it's certainly worth trying.
1. Why does the author mention Watkins' predictions in the first paragraph?A.To make comparisons. | B.To introduce the topic. |
C.To support her argument. | D.To provide examples. |
A.Plain laziness. | B.Health problems. |
C.Lack of time. | D.Security concerns. |
A.She can get relaxed after work. | B.She can keep physically fit. |
C.She can help with her son's study. | D.She can know her son better. |
【推荐2】Balancing work and school is not an easy task for me. My first term in college has come and gone and I’ve had to balance a job there, too. I want to cut one loose. Honestly, many times I thought I wanted to drop out of school and just do my job because I needed the money. For a long while I made myself believe that school was getting in the way of my job and money. Not only was I trying to do work and school, but also I was trying to have a social life. Many times I thought that there were not enough hours in the day but I wasn’t managing my time right. Hanging out with friends may have been wonderful but it wasn’t putting money in my pocket or knowledge in my brain. Friends would have to wait. I was back on the see-saw (跷跷板) of balancing work and school.
Scheduling and planning became the key to my success. Setting deadlines and meeting them were important to my college experience. Planning was going well and I felt ready to try and throw a social life back there. I tried to make plans with friends that didn’t conflict with my deadlines. That was actually harder than I thought. So once again my social life had to be put on hold (搁置). My friends were very understanding and encouraged me to do my work. The extra motivation really proved helpful in the end. Some friends would joke that I was all work and no play but sometimes that’s what has to happen to get work done.
As the last term came to an end I can say I learned a lot about college life. Planning is necessary for organization. Drawing up a list of all things I had to do at the beginning of the week and actually completing them made me feel good. Not only have I learned something new about organization, but also I acquired a new tool that I can take everywhere with me and use effectively.
1. The author wanted to drop out of school because .A.he wanted to earn money |
B.he wasn’t good at managing his time |
C.he wanted to live an active social life |
D.he couldn’t do well in his studies |
A.He had to wait for them. | B.It was a waste of time. |
C.He didn’t need a social life. | D.They didn’t understand him. |
A.By putting his studies first. | B.By making plans with his friends. |
C.By following his friends’ advice. | D.By sticking to his schedule. |
【推荐3】Time is precious for students especially during finals. Having good skills of time management becomes so important. But how can you manage your time?
Get some sleep.
When things get rough, sleep often gets cut out of your schedule. The lab report has to be done by tomorrow morning, so... no sleep tonight, right? Wrong.
Prioritize (划分优先顺序) often.
Keep a running list of the major tasks that you’re performing. Change it as often as necessary and refer to it when you feel worried about all the things you have to do.
You can’t do so many all at once.
Although you might try hard to plan every detail of your routine, sometimes things just happen. You might get sick or your roommate loses your keys. Set aside as much time as you can each day for emergencies. That way, you needn’t deal with the unexpected in a rush.
Schedule time to relax.
Finals can be surprisingly stressful, and you may not realize how much harm they do to you until they’re over. Workload can sometimes be unbearable. Schedule some free time to make you mentally recharged.
Ask for help when you need it.
Asking for help is pretty normal during learning. It’s rare to find a student who can make it through school life without any help.
A.Get on well with roommates |
B.Leave extra time, just in case |
C.Thus, don’t hesitate to seek help when necessary |
D.Feeling worried may help you accomplish nothing |
E.If you feel depressed, focus on the one at the top of the list |
F.Let your brain take a break so it can go back to work efficiently |
G.Not getting enough sleep can actually cost you more time in the long run. |