1 . Running is often tiring and a lot of hard work, but nothing beats the feeling you get after finishing a long workout around the track.
But while it’s long been believed that endorphins (内啡肽) —chemicals in the body that cause happiness—are behind the so-called “runner’s high”, a study suggested that there may be more to this phenomenon than we previously knew.
According to a recent study published by a group of scientists from several German universities, a group of chemicals called endocannabinoids (内源性大麻素) may actually be responsible for this familiar great feeling.
To test this theory, the scientists turned to mice. Both mice and humans release high levels of endorphins and endocannabinoids after exercise. After exercising on running wheels, the mice seemed happy and relaxed and displayed no signs of anxiety. But after being given a drug to block their endorphins, the mice’s behavior didn’t seem to change. However, when their endocannabinoids were blocked with a different drug, their runners’ high symptoms seemed to fade.
“The long-held notion of endorphins being responsible for the runner’s high is false. Endorphins are effective pain relievers, but only when it comes to the pain in your body and muscles you feel after working out,” Patrick Lucas Austin wrote on science blog Lifchacker.
Similar studies are yet to be carried out on humans, but it’s already known that exercise is a highly effective way to get rid of stress or anxiety. The UK’s National Health Service even prescribes (开药 方) exercise to patients who are suffering from depression. “Being depressed can leave you feeling low in energy, which might put you off being more active. Regular exercise can improve your mood if you have depression, and its especially useful for people with mild to moderate (中等的) depression,” it wrote on its website.
It seems like nothing can beat that feeling we get after a good workout, even if we don’t fully understand where it comes from. At least if we’re feeling down, we know that all we have to do is to put on our running shoes.
1. What did scientists from German universities recently discover?| A．Working out is a highly effective way to treat depression. |
| B．The runner’s high could be caused by endocannabinoids. |
| C．Endorphins may contribute to one’s high spirits after running. |
| D．The level of endorphins and endocannabinoids could affect one’s mood. |
| A．To find what reduces the runner’s high symptoms. |
| B．To see the specific symptoms of the runner’s high. |
| C．To identify what is responsible for the runner’s high. |
| D．To test what influences the level of endocannabinoids released. |
| A．Effect. | B．Goal. | C．Opinion. | D．Question |
| A．They can help ease depression symptoms. |
| B．They are the best way to treat depression. |
| C．They only work for those with serious depression. |
| D．They can help people completely recover from depression. |
2 . Anyone who’s lived through middle school knows those years can be particularly challenging. Some researches show youths across the U.S. are struggling with mental health. The physical health benefits of bike riding have been well-documented. Wilson, a researcher at Loma Linda University School of Medicine, and his co-authors carried out a new study to see if taking part in a cycling program could result in measurable changes in mind for teenagers.
The study involved more than 1,200 students, ages 11 to 14. Students participated in a cycling class for at least three days a week, for a period of 6 weeks. They learned cycling safety and practicing skills outdoors while raising their heart rate and just having fun. The students completed standardized questionnaires before and after the program designed to measure their health.
“We know cycling can benefit the body. Our research shows how it benefits the mind and social relationships as well. Bike riding can be an ideal activity for adolescents because of the benefits it offers,” said Wilson.
“Cycling engages several parts of brain function. You are looking at your hearing, you’re balancing, you’re navigating and turning. Oftentimes, you’re doing it with someone else, so there’s the positive effect of company or group activity,” said Allan Reiss, a professor at Stanford University School of Medicine.
While exercise has powerful mental health benefits, it’s not universal. For example, previous research has shown that teenage girls are at higher risk of mental health problems like depression and anxiety than boys. The current study found that, while middle school girls reported increased well-being after participating in the cycling program, that increase “may just reach the kind of baseline level for male students,” Wilson said. And other aspects of healthy living are also important, noted Wilson. The study found that teenagers who didn’t limit screen time to a maximum of two hours a day, or who got less than the recommended 8.5 hours of sleep, saw less improvement in their well-being, he said.
1. What does the new study mainly focus on?| A．Challenges in middle school. | B．Youths in America. |
| C．Physical benefits of cycling. | D．Mental effects of bike riding. |
| A．Attend the cycling class for a week. |
| B．Learn how to keep safe while cycling. |
| C．Raise their heart rate by cycling indoors. |
| D．Design questions to measure their health. |
| A．Supportive. | B．Doubtful. | C．Unclear. | D．Negative. |
| A．Application of the research results. |
| B．Doubts about the research methods. |
| C．Further explanation of the research findings. |
| D．Supporting evidence from previous research. |
3 . Trainers and parents saw children play sports at a young age and then saw them become professional. Many correlated the training to success. Competitive sports are good for young children because they teach children life skills, provide health benefits, and offer special opportunities.
To begin with, sports teach children life skills. A formal athlete stated, “I played soccer in high school and college and found team sports weren’t just about winning, but also about developing a solid ethic(行为准则), and learning why that’s important.” In short, playing highly competitive sports teaches kids many life skills like teamwork. People will have to use teamwork for the rest of their life, and sports can help them improve that skill. Taking part in sports can help develop a positive attitude towards life, which will help in the long run.
Sports are also good for kids because they provide health benefits. It is healthier for a kid to play a sport competitively than to waste time playing video games all day. Furthermore, a research group of University of California said, “96 percent of the participants(参与者) said they enjoy their sports. They’re all loving life.” That is to say, kids playing highly competitive sports tend to enjoy life instead of doing something else like watching TV.
On the other hand, some people might argue that competitive sports are bad for young children because they are so time-consuming. However, the time spent is not “robbing” kids of their childhood, but offers unique opportunities. Athletes can get success to live their dream life by playing sports. Even though sports are time-consuming, they offer distinctive opportunities.
In conclusion, competitive sports are good for children because they can provide wholesome benefits, create new experiences, and build skills that will last a lifetime.
1. Why is the formal athlete mentioned in paragraph 2?| A．To show a reason | B．To give an example. |
| C．To list a background. | D．To draw out a new point. |
| A．Supportive. | B．Uncertain. | C．Uncaring. | D．Doubtful. |
| A．Common | B．Unreasonable | C．Unique. | D．Frequent. |
| A．The ways to play sports. |
| B．The reasons for playing sports. |
| C．The problems of kids’ playing sports. |
| D．The benefits of kids’ playing sports. |
Recently, a poll(民意调查) finds that although almost three in four adults played sports when they
But that decline in interest doesn’t stop parents from encouraging their children to make sports a part of their lives.
And, while most adults no longer play sports
“Sports are an important part of a healthy community. They help children and adults maintain a fit
5 . Many hear endlessly how good exercise is for our health,but you might be surprised to know just how good.
It helps you breathe better.
Frequent exercise improves the volume of oxygen you can use in your body.This is what makes you fit and the benefits aren’t limited to sport.
Physical activity enhances your mental health.
Doing something active releases “happy” brain chemicals that make you more positive.The more you do it,the better you’ll feel.But you do need to work up a sweat.If you’ve had a bad day,treat yourself to a little bit of exercise.
The way your guts (内脏) feel often impacts on your mental and physical health.Walking,running and yoga strengthen abdominal (腹部的)muscles,increase the heart rate and encourage your muscles to move digestive waste through your body more efficiently and digest food more quickly.
Keeping active keeps you young.
There may not be an elixir (灵丹妙药) of youth just yet,but keeping fit comes close.Just 15 minutes of exercise a day for eight years can increase your lifespan by three years.The more you do,the longer you could live.
| A．It aids your digestion. |
| B．It gives you a better appetite. |
| C．Increased muscle strength helps too. |
| D．Here are the benefits you can get from exercise. |
| E．This is because physical activity delays cell ageing. |
| F．People think this will catch our attention and inspire our action. |
| G．Power walking or rope skipping is a brilliant stress reliever. |
1.体育课活动项目；
2.课外活动项目；
3.你最喜欢的运动及感受。
注意：1.词数80左右；
2.可以适当增加细节，以使行文连贯。
Dear Bob,
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Yours,
Li Hua
7 . Sports can help contribute to a healthy body and get you close to nature. However, whether you are on the mountains, in the waves, or on the grassland, you should be aware that your sport of choice might have great impact on the environment.
There are many environment-friendly sports.
Whatever sport you take up, you can make it greener by using environment-friendly equipment and buying products made from recycled materials. But the final goal should be “green gyms”. They are better replacements for traditional health clubs and modern sports centers. Members of green gyms play sports outdoors, in the countryside or other open spaces.
| A．It will cost you a lot. |
| B．Some sports are resource-hungry. |
| C．This causes major environmental effects. |
| D．Power walking is one of them that you could take up today. |
| E．There is no special requirement for you to start your membership. |
| F．If you walk on a regular basis, it will benefit your heart and bones. |
| G．More and more people are concerned about environmental protection |
8 . The beach may seem like an inviting place to run on a cool summer morning, but is running on the sand good for your body? It can be, but it’s important to be aware of the challenges that some beach runners experience before you get ready.
Running on the beach can be a good thing. It’s certainly different from running on a track or a pavement. For starters, sand can be a challenge because it has an uneven(不平坦的) surface. As you push off, you’re going to lose some of your push as the sand moves. So, you’re not going to be able to push yourself forward as you would on a track or a pavement. But this unevenness has an upside: It gives your body an extra workout, forcing you to exercise muscles that don’t get as much use during runs on firm surfaces. For example, your feet, ankles and lower back might feel sorer and more tired than usual after a beach run just because the surface is constantly moving and changing step to step.
You also might feel sore afterward because beaches tend to slope (倾斜) down to the water. If you’re going for a long run on the beach, you might notice that one side of your body might feel sorer because you’re putting more pressure on it due to the slope.
Some beach runners prefer to run barefoot-- not wearing anything on feet. However, if you’re not used to barefoot running, start slowly and don’t run long distances at first. That’s because running barefoot uses more different muscles than running with shoes does, and it’s important to strengthen these muscles and adapt your feet. If you want to run barefoot and as long as you run carefully enough into it, go for it!
Running on the sand can be a smart choice for you, because running on softer ground surfaces can reduce muscle damage.
1. Why is it difficult to run on the beach for starters? ________| A．The soft surface makes people fall over easily. |
| B．It’s hard to keep one’s balance on its hard surface. |
| C．People need to run carefully on its smooth surface. |
| D．Running on its uneven surface takes much effort. |
| A．Challenge. | B．Advantage. | C．Reason. | D．Character. |
| A．Positive. | B．Critical. | C．Doubtful. | D．Uncaring. |
| A．a primary school textbook | B．a tourist guide |
| C．a sports magazine | D．a scientific report |
9 . Benefits of Sports
Doing sports is a physical, mental and social adventure. It’s a great way for children to take a break from studies and release extra energy. It also helps them lead fuller and happier lives as regular sports have proven beneficial to overall well-being.
The physical benefits of doing sports are probably the most obvious. Regardless of your fitness level when you start playing sports, you’ll notice an increase in your overall fitness once you’re involved.
Children who participate in sports might also benefit from the social aspect, feeling part of a group, building up responsibility and leadership.
Discipline is another social advantage. Most organized sports require a strict training and practice schedule. As a student-athlete, you need to balance studies and athletics.
There is no shortage of reasons to find a sport to get involved in. Are you ready to go? Pick one and get moving!
| A．It’s not just your body that benefits from sports. |
| B．Therefore, playing sports is going to make you more fit. |
| C．But remember, a child’s self-worth should not be distinguished by victory or loss. |
| D．If you play group sports, you’ll be part of a team that takes direction from a coach. |
| E．Nearly every sport requires physical activities and the competitive skills. |
| F．Among these, learning how to function as part of a team is the most important advantage. |
| G．Only with strict discipline can you be successful both in the classroom and in the sports field. |
10 . In 1665, Johannes Vermeer, one of the greatest painters in Netherlands, completed his masterpiece “Girl With a Pearl Earring.” On an April day 357 years later, Janine Strong slowed her bike to stop, paused her fitness app, and watched as the snaking line of her cycling route drew the shape of Vermeer’s masterpiece over the streets of Brooklyn.
Ms. Strong creates what has come to be known as “GPS art” — a practice that uses the Global Positioning System mapping capabilities of modern phone apps to create digital drawings with an athlete’s route. It has grown with the widespread availability of satellite tracking for use by ordinary people. In fact, the idea has been around since before the popularity of smartphones for fitness like Strava released in 2009.
In 2003, The New York Times Magazine told of how Jeremy Wood got the idea for GPS art. Mr. Wood said while he was using a GPS tracker on a flight and the plane flew in a holding pattern above Heath-row Airport, he was attracted by the pattern appearing on his Garmin GPS device. In recent years, technology has advanced enough to create visual maps in real time using a phone or smart watch.
“I get bored cycling on the same path in the same streets,” Ms. Strong said. “Creating GPS art gives me more reasons to hit the pavement, which makes cycling a lot easier. I always have a big smile on my face when it works out and I upload it and it’s done,” she added. “It’s a very satisfying feeling.”
To complete her digital vision of “Girl With a Pearl Earring,” she biked almost 50 miles around southern Brooklyn, carefully checking Strava to make sure each turn, circle, and straight line was achieving the shape of earring and head covering of Vermeer’s original.
1. What can we infer about Janine Strong in paragraph 1?| A．She tests a fitness app. | B．She is an innovative cyclist. |
| C．She likes pearl earrings. | D．She is a painter of some note. |
| A．It is rarely used by common people. | B．It arose after the popularity of fitness apps. |
| C．It is based on apps’ GPS mapping functions. | D．It is a practice of creating realistic drawings. |
| A．The origin of GPS art. | B．The prospect of GPS art. |
| C．The function of a GPS tracker. | D．The advancement of a GPS device. |
| A．Painting lovers. | B．Mobile game players. |
| C．Software developers. | D．Running enthusiasts. |
