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.

2 . All over the world people enjoy sports. Sports help to keep people healthy and happy, and to live longer.     1    . They buy tickets or turn on their TVs to watch the games. Often they get very excited when their player or team wins.

    2     Football, for example, has spread around the world. Swimming is popular in all countries near the sea or in those with many rivers. What fun it is to jump into a pool or lake, whether in China, Egypt or Italy!     3    . Think how many lovers to skate or ski in Japan, Norway or Canada.

Some sports or games go back thousands of years, like running or jumping. Chinese wushu, for example, has a very long history. But basketball and volleyball are rather new. Neither one is a hundred years old yet.    4    . Water-skiing is one of the newest in the family of sports.

People from different countries may not be able to understand each other, but after a game together they often become good friends.     5    . One learns to fight hard but fight fair, to win without pride and to lose with grace.(胜不骄，败不馁)

A．And think of people in cold countries.

B．Sports help to train a person’s character.

C．Not a few people like sports in the world.

D．Many people like to watch others play games.

E．People aren’t inventing new sports or games.

F．Some sports are so interesting that people everywhere take part in them.

G．People are inventing new sports or games all the time.

3 . 语篇填空

The term “extreme sports”, which we might have seen on a magazine or a website,     1    (be) becoming more and more common as the concept of extreme sports gains     2     (popular). But what are extreme sports on earth?

During the 1970s and 1980s, the term was used for sports with high risks     3     (involve). Today, however, the sports also include activities that give a feeling of adventure without    4    (necessary) putting a participant’s life in danger. For every extreme sport, there is professional equipment that has been developed     5     (protect) your body, improve your performance and give you    6     advantage in the competition.

Extreme sports cover a wide range. Some     7     (develop) from familiar activities so far, like mountain biking, climbing and drag race. Some may not be well known. For instance, bouldering is a kind of rock climbing     8     no rope is used.     9     usually takes place in an area with large rocks or in climbing center.

Nowadays, such sports have become more popular     10     young people all over the world than ever before.

4 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

According to a review of evidence in a medical journal, runners live three years     1    (long) than non-runners. You don't have to run fast or for long    2    (see)the benefit. You may drink, smoke, be overweight and still reduce your risk of     3     (die) early by running. While running regularly can't make you live forever, the review says it     4     (be) more effective at lengthening life    5     walking, cycling or swimming. Two of the authors of the review also made a study published in 2014    6    showed a mere five to 10 minutes A day of running reduced the risk of heart disease and early deaths from all     7    (cause).

The best exercise is one that you enjoy and will do. But otherwise…   it's probably running. To avoid knee pain, you can run on soft surfaces, do exercises to    8    (strength)your leg muscles(肌肉),avoid hills and get good running shoes. Running is cheap, easy and it's always    9    (energy).If you are time poor, you need run for only half the time to get the same benefits as other sports, so perhaps we should all give    10    a try.

5 . If you are already making the time to exercise, it is good indeed! With such busy lives, it can be hard to try and find the time to work out.     1     Working out in the morning provides additional benefits beyond being physically fit.

Your productivity is improved. Exercising makes you more awake and ready to handle whatever is ahead of you for the day.     2    

Your metabolism(新陈代谢) gets a head start.     3     If you work out in the mornings, then you will be getting the calorie(卡路里) burning benefits for the whole day, not in your sleep.

    4     Studies found that people who woke up early for exercise slept better than those who exercised in the evening. Exercise energizes you, so it is more difficult to relax and have a peaceful sleep when you are very excited.

    5     If you work out bright and early in the morning, you will be more likely to stick to healthy food choices throughout the day. Who would want to ruin their good workout by eating junk food? You will want to continue to focus on positive choices.

There are a lot of benefits to working out, especially in the mornings. Set your alarm clock an hour early and push yourself to work out! You will feel energized all day long.

A．You will stick to your diet.

B．Your quality of sleep improves.

C．You prefer healthy food to fast food.

D．There is no reason you should exercise in the morning.

E．You can keep your head clear for 4-10 hours after exercise.

F．After you exercise, you continue to burn calories throughout the day.

G．If you are planning to do exercise regularly, or you’re doing it now, then listen up!

6 . Reasons Why Physical Education is Important in School

Are you looking for information about the importance of physical education in schools and why it should be emphasized? Do you want a healthy active lifestyle for your kids? Then this article can help you convince your kids that exercising and participation especially in school PE classes are important.

● It's a link to good health.

    1     It's only in physical education classrooms that students learn the value of taking care of themselves through proper healthy eating and regular exercise.

●It's preventive measure against diseases.

    2     Without any forms of diet management and control with the numerous processed foods students intake every day, a student's health can easily be at risk of many diseases. Physical education in schools is a preventive measure to teach students the value of regular exercise.

●    3    

Physical health allows students to function even better in classrooms. A good cardiovascular(心血管的) system developing from regular exercise promotes excellent blood and oxygen circulation. This means more nutrients circulate throughout the body which includes the brain. This circulation produces longer attention time during classes allowing longer concentration and better absorption.

● It builds self-esteem

Students who are active in physical activities like basketball, volleyball and running are more confident with themselves according to most social school studies.     4     In school, the physical education program introduces these sport activities to students allowing them to make choices of which sport areas they want to get involved in.

●    5    

Most physical education programs are holistic. The program allows students to interact together to a common goal, that is, to win and excel physically. It not only brings out the competitive sides of students working with both body and mind but also promotes sportsmanship.

●It promotes a physically active lifestyle.

The purpose of physical education is to instill(逐渐灌输) in students, at an early age, the value of self-preservation and choosing a lifestyle that is good for both the mind and body.

A．Physical education plays a vital role in students' development and growth.

B．It's a program for muscle strength and fitness.

C．It's probably because of the dedication made to a sport that brings out the best in students.

D．It develops cooperation, teamwork and sportsmanship.

E．The value of physical fitness cannot be overstated too much.

F．It promotes academic learning.

G．Many doctors today agree that obesity is a serious health risk.

7 . Running for a Dream

I will never forget that November day．It was hotter than normal．This was the ________ my father and I had waited so long for，because we had been working towards this race for three years．Dozens of familiar faces from church and school flashed across my view．They had come ________me．I saw worry and ________on my father's face．Then the race began!

For the first two and a half miles．I felt________．I had never before been so ready for something．The weeks leading up to the race were filled with controlled________and a strict diet．My friends hadn't seen me in weeks，but they understood the _______required to make my dream a reality．As in all of my races，I didn't _______ out in the front，I loved the pleasure of passing people as my strength overtook their premature speed．

Then without warning，my strength began to decrease．Neck and neck with one of my greatest competitors，I ________see the finish line．I had begun the final dash into_______when my knees became weak and my legs gave way．Nothing I could do would make them _______ weight．

I watched as runners rushed by me．________ I knew my dreams of victory were destroyed．I had to finish the race．However，my legs hurt badly．With all of the ________ left in me，I got on my hands and knees and crawled （爬），inch by inch，across the finish line．Voices，both ________ and familiar，cheered me on．They gave me the courage to keep ________until the very end．

The doctors were there in seconds，but my eyes searched the crowd for him．There was only one person I wanted to ________to．I whispered，"I'm so sorry，Dad，I'm so sorry I ________you．"He looked at me，saying，"You could never disappoint me．Sometimes these things just ________．All that matters is that you did your best．"

"But we worked so ________．What about our dream？"He reached over for my hand and said，"Don't you know that you are my dream and it has come true？"

It wasn't long before my running shoes were back on，marking a________path for my journey，I learned that all of the miles，the tears，the sweat，and the pain my dad and I experienced together were not for a________．What I realized，though，was that to him，I was the greatest prize he had ever won．

1.

A．dream

B．weather

C．result

D．day

2.

A．for

B．to

C．across

D．over

3.

A．coldness

B．astonishment

C．excitement

D．amusement

4.

A．proud

B．great

C．nervous

D．afraid

5.

A．programs

B．studies

C．instructions

D．practices

6.

A．sacrifice

B．potential

C．patience

D．attention

7.

A．look

B．move

C．start

D．come

8.

A．should

B．could

C．must

D．need

9.

A．relief

B．spirit

C．pleasure

D．glory

10.

A．give

B．feel

C．hold

D．add

11.

A．Where

B．Because

C．If

D．Although

12.

A．trust

B．emotion

C．strength

D．confidence

13.

A．loud

B．foreign

C．soft

D．firm

14.

A．going

B．running

C．fighting

D．training

15.

A．refer

B．talk

C．listen

D．agree

16.

A．frightened

B．disturbed

C．disappointed

D．bored

17.

A．develop

B．change

C．follow

D．happen

18.

A．late

B．hard

C．closely

D．quickly

19.

A．new

B．near

C．rough

D．narrow

20.

A．wish

B．duty

C．rank

D．race