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.

2. Why did the scientists give mice drugs in their experiment?

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.

3. What does the underlined word “notion” mean?

A．Effect.

B．Goal.

C．Opinion.

D．Question

4. What can we know about regular workouts according to the UK’s National Health Service?

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.

5 . 听下面一段较长对话，回答以下小题。
1. When did Rob first decide to go surfing?

A．When his father offered to teach him.

B．When his mom gave him a board.

C．When he saw some local matches.

2. What does Rob say about surfing in the winter?

A．He wears warm wetsuit.

B．The sea is warmer than the land.

C．It is difficult to stand on the board.

3. How did Rob feel about surfing the enormous wave?

A．He was afraid of falling off his board.

B．He was worried at first by the size of the wave.

C．He was upset he did not have the right board.

4. What does Rob want to do next?

A．Think of surfing as a career.

B．Study surfing science at university.

C．Train for the next surfing match.

6 . Physical education, or PE, isn’t required for all high school students. In some schools, it isn’t offered for some different reasons. But should high school students have physical education? The answer is certainly “yes”.

Today many people don’t do sports. But as is known to all. doing sports is very important for an adult. Teaching teens the importance of a healthy lifestyle and making fitness plans now can help teens put exercise in the first place as an adult.

High school isn’t that easy. Many students are under a lot of stress. Stress can be harmful to a student’s studies and life. Doing sports can help them deal with stress better, helping them live a happier life at school.

The American Heart Association says that 10 million kids and teens suffer from obesity (肥胖). Teens should get 60 minutes of physical activity per day to control their weight and to help their bones get stronger. The increase in activities that don’t get teens to move around, such as computer games, means many teens don’t get their required exercise. PE classes act as a public health measure (措施) to encourage physical activities and help teens have healthy weights.

Not doing sports increases teens’ hazard of developing many diseases. An active lifestyle offers a good way of protection from these health problems. As much as 75 percent of health-care spending goes toward treating medical conditions that can be prevented by lifestyle changes, according to the American College of Sports Medicine.

According to the President’s Council on Fitness, Sports and Nutrition (PCFSN), students who performed five hours of physical activities each week improved their academic (学业的) performance. Students from programs with no physical activity, who used the extra time for classroom study, did not perform better on tests than those who gave up some study time in support of physical education.

1. According to Paragraph 2, what does physical education in high school mean?

A．Making teens attach importance to ęxercise later.

B．Removing the stress faced by teens at school.

C．Getting teens to encourage adults to exercise.

D．Helping teens learn to make good plans

2. What does the underlined word “hazard” in Paragraph 5 mean?

A．Happiness.

B．Risk.

C．Safety.

D．Sadness.

3. According to the PCFSN, doing sport          .

A．means making students choose between sports and studies

B．helps students make good use of all their time

C．means students adjust to their studies better

D．helps students do better in their studies

4. What is the text mainly about?

A．Why high school students should receive physical education.

B．Why some schools consider physical education important.

C．How schools can help students love doing sports.

D．How high school students can live a better life.

7 . In 1997, a group of twenty British women made history. Working in five teams with four women in each team, they walked to the North Pole. Apart from one experienced female guide, the other women were all ordinary people who had never done anything like this in their lives before. They managed to survive in an environment which had defeated several very experienced men during the same period.

Once on the ice, each woman had to ski along while dragging a sledge (雪橇) weighing over 50 kilos. This would not have been too bad on a smooth surface, but for long stretches (一片地域), the Arctic ice is pushed up into huge piles two or three meters high and the sledges had to be pulled up on side and carefully let down the other so that they didn’t crash. The temperature was always below freezing point and sometimes strong winds made walking while pulling so much weight almost impossible. It was also very difficult to put up their tents when they stopped each night.

In such conditions the women were making good progress if they covered fourteen or fifteen kilometers a day. But there was another problem. Part of the journey was across a frozen sea with moving water underneath the ice and at some points the team would drift (漂流) back more than five kilometers during the night. That meant that after walking in these very terrible conditions for ten hours on one day, they had to spend part of the next day covering the same ground again. Furthermore, each day it would take three hours from waking up to setting off and another three hours every evening to set up the camp and prepare the evening meal.

So, how did they manage to succeed? They realized that they were part of a team. If any one of them didn’t pull her sledge or get her job done, she would endanger the success of the whole expedition (远征探险). Any form of selfishness could result in the efforts of everyone else being completely wasted, so personal feelings had to be put to one side. At the end of their journey, the women agreed that it was mental effort far more than physical fitness that got them to the North Pole.

1. What was so extraordinary about the expedition?

A．It was a new experience for most of the women.

B．The women did not have any men with them.

C．The women had not met one another before.

D．There was no one leading it.

2. During the expedition, the women had to be careful to avoid________.

A．being left behind	B．damaging the sledges
C．falling over on the ice	D．breaking the ice

3. It was difficult for the women to cover 15 kilometers a day because________.

A．they got too tired	B．they kept getting lost
C．the ice was moving backwards	D．the temperatures were very low

4. Which of the following can best describe the women in the text?

A．Strict but caring.	B．Proud but patient.
C．Honest and devoted.	D．Determined and strong-willed.

5. What can we infer from the text?

A．Experience must be bought.

B．Facts speak louder than words.

C．He who risks nothing gains nothing.

D．Motivation and teamwork achieve goals.

8 . 阅读下面短文，根据所给情节进行续写，使之构成一个完整的故事。

Hannah tightened her helmet, a man's voice boomed from the louder-speakers: "Participants in the Five-Mile Junior Fat-tire Race. Please gather behind the orange flags."

Her heart was filled with excitement. First prize was a mountain bike. On a bike like that, she'd fly through the woods.

"Three, two, one, go!"

The lead--dut(引路人) made turn onto section of single track(小道) and gathered speed. girl with red hair rolled in behind him. The lead-out sped up again. Hannah slowed down for the hill, following close behind the red-haired girl, but the girl was gaining speed.

Hannah sped up and pedaled(骑行) the downhill section. Still, the red-haired- girl biked faster. They crossed wooden bridge. The lead-out and the girl disappeared behind a thick stand of trees. When Hannah glanced over her shoulder, she saw nobody behind her.

Hannah watched for the orange arrows(箭头) marking the course and biked through the muddy fields. "The girl might still get tired, "she thought. Then Hannah saw her. At the edge of the forest, the girl was bending her knees by her bike, the lead-out next to her. The girl must have gotten a flat. Hannah biked faster. She didn't slow down the hill but pedaled harder. She wiped the sweat from her eyes, breathless. The lead-out noticed her and jumped on his bike. Hannah was close enough now to see the girl putting the chain on the chain ring

Hannah felt energy flowing through her as she followed the lead-out past the girl into the woods. Maybe she could win.

In the middle of a small grassland, Hannah looked back. The girl was coming up behind her at crazy speed.

Hannah reached fork(岔路) in the trail. The lead-out- was nowhere in sight, but on her left was the sign with the orange arrow. When she turned, her foot slipped off the pedal, and she accidentally kicked the sign over
注意:
1.所续写的短文词数应为150左右;
2.应使用至少5个以上短文中标有下划线的关键词语;
3.续写部分分为二段,每段的开头语已经为你写好:
4.续写完成后,请用下划线标出你所使用的关键词语。
Paragraph1:

“I need to stop and fix the sign, or the other racer might get lost.” She thought .

Paragraph 2:

Looking at the shining mountain bike, Hannah felt like crying

9 . 语法填空

For 34 years, thousands of runners     1    （take）on the Marathon des Sables, a 140-mile race through the Sahara.     2    (consider) the world’s most difficult race, des Sables takes place over the course of six days through Morocco’s unforgiving Sahara.

At 46, Amy Palmiero-Winter is not what most picture when they think of     3     athlete, but for her, running has been a lifelong passion: an escape, a comfort, a calling. So, when a careless driver crashed into her motorcycle 25 years ago and damaged her left leg, she did everything she could     4    （save）it.

She couldn’t imagine not running. But three years and 25 operations later it became obvious that her leg would never     5    （true）recover. But hardships couldn’t keep her from running. In fact, they may have pushed her     6    （close）towards it. “When something bad happened to me, I went out for a run. It kept me from any darkness.” Palmiero-Winter said. After recovering from her amputation, she tried running again. Struggling     7    low-tech artificial legs, in 2004 she placed second in the Silver Strand Half Marathon. Today, she holds 11 world records and countless awards,     8    （include）the James E. Sullivan Award and others,     9    recognized her as the world’s top amateur athlete nearly a decade ago.

But as her latest     10    （achieve）at the Marathon des Sables shows, she’s nowhere near done.

10 . Here’s the list of skiers, who have won four consecutive (连续的) world championships: Nobody.

Well, nobody besides Mikaela Shiffrin, who did it last Saturday in Are, Sweden. The Colorado skier, still just 23, is the best story, really, of this sports winter in the slalom (障碍滑雪).

She pulled it off, despite an illness that challenged her breathing. Shiffrin told NBC after her win that her mother, Eileen, advised her before her second run: You don’t have to do this. But Shiffrin told herself what she had told herself many times before: “I just need 60 seconds.” So she did it, and she got it. Shiffrin is closing in on her third World Cup overall title. She’s ranked No. 1 on the planet in slalom.

In women’s skiing, the mountain is now Shiffrin’s. She’s earned it. Those two (and soon three) World Cup overalls; 56 World Cup individual victories; and, oh yeah, right, three Olympic medals, two of them gold. Shiffrin is already considered a serious threat to Ingemar Stenmark’s record of 86 World Cup victories, and Lindsey Vonn’s 82, though the 34-year-old surely would have collected more had she not suffered repeated injuries during her career. Of course, Shiffrin may wind up chasing someone else’s mark—Austria’s brilliant Marcel Hirscher, 29, now has 68 World Cup wins.

At the same time, Shiffrin loathes all the talk about the numbers and records. “People see the records and statistics. They are asking for more, more, more…it looks easy, but it isn’t. Nowhere close,” Shiffrin wrote. “What I see is training, sleepless nights, pain, doubt, delayed lights, canceled flights, lost luggage, expense, adventure, and some races mixed in there.”

That’s what happens when you’re as good as she is. But nobody’s been as good as she is. In a sense, Shiffrin is just getting started. It’s very possible she will be at her peak powers when the Winter Olympics arrive in Beijing in 2022.

1. What do we know about Mikaela Shiffrin in her recent slalom race?

A．She was not in her best physical condition.

B．She pulled out of the race in the second run.

C．She followed her mother’s advice and succeeded.

D．She told herself a one-minute story before the race.

2. Whose record of World Cup victories is Mikaela Shiffrin getting close to?

A．Eileen Shiffrin’s.	B．Ingemar Stenmark’s.
C．Lindsey Vonn’s.	D．Marcel Hirscher’s.

3. Which of the following best explains “loathes” underlined in paragraph 5?

A．Summarizes.

B．Gives away.

C．Dislikes.

D．Focuses on.

4. What is the best title for the text?

A．Shiffrin Is Moving Mountains	B．Shiffrin Is At Her Peak
C．The Rise And Fall Of A Colorado Skier	D．The Most Popular Winter Sports