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 . In a year that has been characterized by the restriction, there are two activities I have found myself doing more of: running and writing.
At first glance, these two passions seem to be completely opposite. When I write, I’ll retreat (缩进) into my head, where I dig memories, ideas, characters to shape into stories. When I run, I’ll fully inhabit my body. The sounds and feelings of physical effort—foot strike, heartbeat and sweat—drown out the thoughts.
Despite their differences, though, there are similarities. Running and writing are both things we do alone. They both demand at times that we dig deep, keep going and never give up. I’ve also found that running can be complementary to writing. If I’ve been sat for hours, there’s nothing more restorative than getting out for a run. Sometimes when I’m least expecting it, solutions to tricky twists present themselves and ideas drop in as if the movement of running has itself shaken things into place. On the other hand, running especially long-distances has taught me to be brave, to look inside myself to see if there’s more to give. It has also taught me patience.
I’m far from the first runner to notice that running can help the writing process. Reflecting on her writing methods in an article in The New York Times, author and lifelong runner Joyce Oates wrote: Running seems to allow me, ideally, to have an expanded consciousness in which I can imagine what I’m writing as a film or a dream. I can’t say there is an expanded consciousness when I put on my trainers after a hard day’s writing, but there’s some evidence that working up a sweat can also fire up the imagination.
It’s not clear what’s behind the creativity though increased oxygen to the brain has been shown to help cognitive processes, so there’s no reason to think it’s useless. Whatever the link between running and creativity is, next time I find myself struggling to find the right words in the face of a deadline, I’ll run for it.
1. What does running contribute to the author’s writing process?A.Exhaustion and challenges. | B.Relaxation and consciousness. |
C.Affection and physical benefits. | D.Inspiration and creative solutions. |
A.Really helpful. | B.Clearly different. |
C.Negatively related. | D.Potentially dangerous. |
A.She is stressed over struggles and deadlines. |
B.She challenges the claim that running improves creativity. |
C.She is determined to find out why running helps creativity. |
D.She will keep running in order to help her writing process. |
A.What I Have Learned From Running |
B.Running May Fire up the Imagination |
C.Differences Between Running and Writing |
D.Science Says Running Is Good for One’s Health |
6. What did the author learn from long-distance running?
7. Why did the author mention Joyce Oates?
8. How does running influence the author’s writing?
Gu Ailing,
With the Winter Olympics
People say that Gu Ailing is
When it comes to the reason
4 . Free solo climbing is a risky form of rock climbing where the climber makes the climb alone without ropes or any other protective things. In June 2017, Alex Honnold completed an ultimate free solo climb up El Capitan, a 3,000-foot wall in Yosemite National Park.
On a freezing November morning in 2016, Alex determined to take up a challenge-a free solo climb of the world’s most famous vertical(垂直的)cliff. Every step, he had to be extra careful to keep the balance. All the time he had to shine his headlamp on the cold, smooth part of stones to decide where he could next place his foot. Unlike parts of the climb higher up that Alex could climb with his strong fingers, this lower part he must manage with a perfect balance of fine skills and confidence.
Every move tied people’s hearts. The cameraman said. “Every time I got no response, I thought Alex was bailing. But it turned out that I was wrong-He was still moving on.”
More physically challenging parts wait for him to climb up with his feel and hands pressing the rock. The Free blast is the most frightening part. In 2016, after several failures, Alex knew he would try again. His foot tap-tap-tapped against the wall as if he was feeling his way into the huge rock, but he wouldn’t turn back this time. And then, he stood on the top and he made it!
People view free soloing differently. Critics regard it as risky, considering the long list of those who’ve died attempting it. Others, myself included, recognize it as the sport's truest expression. Such was the attitude of Austrian climber Paul Preuss, the father of free soloing. He believed that the spirit of mountain-climbing was to master a mountain with wonderful physical and mental skill.
1. Why is the headlamp mentioned in paragraph 2?A.To prove how dark the environment is. |
B.To indicate how risky the free soloing is. |
C.To share the great pleasure of a solo climber. |
D.To introduce the location of the mountain climber. |
A.Alex was climbing. |
B.Alex was giving up. |
C.Alex was struggling. |
D.Alex was being saved |
A.A great dream is limitless. |
B.Wisdom is better than force. |
C.Gains can't make up for losses. |
D.Strong will leads to a smooth path. |
5. What did Alex need to climb the lower part?
6. What does "turn back" mean in paragraph 4?
7. How does Paul Preuss feel about free soloing?
1.时间、地点和参加人员;
2.比赛过程;
3.比赛的意义。
注意:1.词数100左右;
2.可以适当增加细节,以使行文连贯。
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注意:1.词数100左右;2.短文题目和首句已为你写好。
My favorite sport
Many people like sports.
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7 . I believe even the smartest people have to work hard to achieve success. People make themselves into winners by their own
Many years ago, I took the head
I started doing anything I could to help them build a little
Six months after our defeat, we won our first game and our second, and continued to
A.tests | B.luck | C.efforts | D.nature |
A.operating | B.editing | C.consulting | D.coaching |
A.new | B.excellent | C.strong | D.successful |
A.cheer for | B.prepare for | C.help with | D.finish with |
A.realize | B.claim | C.permit | D.demand |
A.decision | B.attitude | C.conclusion | D.intention |
A.pride | B.culture | C.fortune | D.relationship |
A.leaders | B.partners | C.winners | D.learners |
A.risked | B.missed | C.considered | D.practiced |
A.expand | B.improve | C.relax | D.defend |
A.shame | B.burden | C.victory | D.favor |
A.chance | B.joy | C.concern | D.offer |
A.surprise | B.relate | C.interest | D.affect |
A.encouraged | B.observed | C.protected | D.impressed |
A.naturally | B.individually | C.calmly | D.differently |
8 . Have you ever seen a teenager or an adult riding a small bike? Perhaps it had posts sticking out from both sides of the wheels.
BMX(自行车越野) bikes have a lightweight frame and smaller wheels than other bikes.
A.where did the thrilling sport start? |
B.BMX racing is the original form of BMX. |
C.They are designed to be fast and user - friendly. |
D.It is more than a sport with multiple disciplines. |
E.Today BMX is known as a sport for the risk-takers. |
F.What you saw was likely not a children's bike, but a BMX bike! |
G.Riders of this style of BMX use posts sticking out of their bike wheels. |
注意:1.词数100左右。
2.可适当增加细节,以使行文连贯。
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10 . It’s cold and dark outside, and your bed is so warm and comfortable. Going for a run seems like such a bad idea. But before you hide your running shoes, it might be worth giving that crazy idea a go.
According to The Huffington Post, an outdoor run in winter, as opposed to one on a treadmill (跑步机), burns more calories because the body is working hard to regulate (调节) its core temperature. Furthermore, research shows that race times are faster in cold weather than in warmer temperatures—and quicker runs burn more calories. Similarly, cold weather also makes the heart work harder to distribute blood through the body, making that vital muscle even stronger.
Outdoor exercise also turns up your energy and rids you of the stress and depression that build up every day. The heat and humidity in the summer can drag you down and tire you faster, but cold weather is refreshing. It adjusts you to your surroundings, making you feel alive.
Of course, the threat of smog in some built-up areas is a further hurdle to winter exercise. Heart attacks, stroke, lung cancer and asthma are all dangers of running in smog. The combination of air pollution and exercise increases the potential problems. If you do choose to run outside on smoggy days, take a path in a park or residential area to avoid car exhaust (尾气), and go early in the morning, before rush hour. But staying inside on smoggy days and waiting for the next clear day to run is best.
1. How does cold weather benefit runners, compared with warm weather?A.They can run more slowly. |
B.They can take in more calories. |
C.Their hearts can function harder. |
D.Their body temperature can get lower. |
A.It builds up their energy quickly. | B.It makes runners tired easily. |
C.It lessens runners’ stress. | D.It causes heart attack. |
A.Stop driving cars. | B.Do more exercise. |
C.Avoid outdoor exercise. | D.Run late in the morning. |
A.Refresh with a Winter Run | B.Take Outdoor Exercise in Summer |
C.Go to Run in a Park | D.Follow the Tips to Reduce Stress |