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 . 最近，你校组织了5公里的迷你马拉松（mini-marathon)比赛，请你向21世纪英文报投稿，介绍比赛的情况。内容包括：
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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3 . 请以“My favorite sport”为题，写一篇短文，参加你校英文报征文，内容包括：1.如何爱上这项运动的；2.喜爱的原因。
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.

_________________________________________________________________________________________________________________________________________________________________________________________________________________________

4 . 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 _______ job at a school in Baxley, Georgia. It was a tradition for the school's old team to play against the _______ team at the end of spring practice. The old team had no coach, and they didn't even practice to _______ the game, but to my disappointment we were defeated. Thinking hard about it, I came to _______ that I had to change my _______ towards their ability and potential.

I started doing anything I could to help them build a little _______. Most importantly, I began to treat them like _______. That summer vacation, we met every day and _______     passing and kicking the football.

Six months after our defeat, we won our first game and our second, and continued to ________ . Finally, we faced the number one team in Georgia. I felt that it would be a ________ for us even if we lost the game. But my boys beat them , giving me the greatest ________ of my life!

       From the experience I learnt a lot about how the attitude of the leader can ________ the members of a team. Instead of seeing my boys as losers, I pushed and ________ them. I helped them to see themselves ________       , and they built themselves into winners. Winners are made, not born.1.

A．tests

B．luck

C．efforts

D．nature

2.

A．operating

B．editing

C．consulting

D．coaching

3.

A．new

B．excellent

C．strong

D．successful

4.

A．cheer for

B．prepare for

C．help with

D．finish with

5.

A．realize

B．claim

C．permit

D．demand

6.

A．decision

B．attitude

C．conclusion

D．intention

7.

A．pride

B．culture

C．fortune

D．relationship

8.

A．leaders

B．partners

C．winners

D．learners

9.

A．risked

B．missed

C．considered

D．practiced

10.

A．expand

B．improve

C．relax

D．defend

11.

A．shame

B．burden

C．victory

D．favor

12.

A．chance

B．joy

C．concern

D．offer

13.

A．surprise

B．relate

C．interest

D．affect

14.

A．encouraged

B．observed

C．protected

D．impressed

15.

A．naturally

B．individually

C．calmly

D．differently

5 . 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.     1    

BMX(自行车越野) bikes have a lightweight frame and smaller wheels than other bikes.     2     The sport of BMX began when kids wanted to copy off-speed motorcycle race that were very popular. Today it is a sport with multiple disciplines.

    3     It is an exciting, fast-paced event with off-road tracks, jumps and bends. Up to eight riders race at a time. BMX street riding takes BMX off the competitive stage, and into the city for some fun. The goal is to do as many creative tricks as possible in the environment. BMX park riding originated when people started using skate parks, empty pools or parking lots, discovering new ways to ride. Later, the style was recognized as a sport and parks were created specially for riders to practise in. Lastly, BMX flatland riding differs from all the rest. Flatland uses nothing but a flat surface where the rider balances and does dance-like tricks on the bike.     4     The posts are called pegs and they enable the rider to do more tricks. They can stand on them in flatland BMX or use them to grind(摩擦)or stall in other styles of BMX.

    5     But in reality, it is a sport over 65 years old. Contests such as the X Games and the Summer Olympics are putting BMX back in the spotlight.

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.

6 . 假如你是李华，你的英国网友Forbes打算抽空到中国学习太极(Tai Chi)，他写信向你求助，请你根据下列要点给对方写一封回信：1.介绍学太极好处；2.负责联系学习地点和老师。
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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7 . 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.

2. How does summer affect runners?

A．It builds up their energy quickly.	B．It makes runners tired easily.
C．It lessens runners’ stress.	D．It causes heart attack.

3. What are the runners supposed to do on smoggy days?

A．Stop driving cars.	B．Do more exercise.
C．Avoid outdoor exercise.	D．Run late in the morning.

4. What can be the best title of the text?

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