1 . As we age, even if we’re healthy, the heart just isn’t as efficient in processing oxygen as it used to be. In most people the first signs show up in their 50s or early 60s. And among people who don’t exercise, the changes can start even sooner.

“Think of a rubber band. In the beginning, it is flexible, but put it in a drawer for 20 years and it will become dry and easily broken,” says Dr. Ben Levine, a heart specialist at the University of Texas. That’s what happens to the heart. Fortunately for those in midlife, Levine is finding that even if you haven’t been an enthusiastic exerciser, getting in shape now may help improve your aging heart.

Levine and his research team selected volunteers aged between 45 and 64 who did not exercise much but were otherwise healthy. Participants were randomly divided into two groups. The first group participated in a program of nonaerobic (无氧) exercise—balance training and weight training—three times a week. The second group did high-intensity aerobic exercise under the guidance of a trainer for four or more days a week. After two years, the second group saw remarkable improvements in heart health.

“We took these 50-year-old hearts and turned the clock back to 30-or 35-year-old hearts,” says Levine. “And the reason they got so much stronger and fitter was that their hearts could now fill a lot better and pump (泵送) a lot more blood during exercise.” But the hearts of those who participated in less intense exercise didn’t change, he says.

“The sweet spot in life to start exercising, if you haven’t already, is in late middle age when the heart still has flexibility,” Levine says. “We put healthy 70-year-olds through a yearlong exercise training program, and nothing happened to them at all.”

Dr. Nieca Goldberg, a spokeswoman for the American Heart Association, says Levine’s findings are a great start. But the study was small and needs to be repeated with far larger groups of people to determine exactly which aspects of an exercise routine make the biggest difference.

1. What does Levine want to explain by mentioning the rubber band?

A．The right way of exercising.	B．The causes of a heart attack.
C．The difficulty of keeping fit.	D．The aging process of the heart.

2. In which aspect were the two groups different in terms of research design?

A．Diet plan.	B．Professional background.
C．Exercise type.	D．Previous physical condition.

3. What does Levine’s research find?

A．Middle-aged hearts get younger with aerobic exercise.

B．High-intensity exercise is more suitable for the young.

C．It is never too late for people to start taking exercise.

D．The more exercise we do, the stronger our hearts get.

4. What does Dr. Nieca Goldberg suggest?

A．Making use of the findings.	B．Interviewing the study participants.
C．Conducting further research.	D．Clarifying the purpose of the study.

2 . Golden Generation

A national team, mostly consisting of teenagers, pushed China to its biggest-ever medal achievement at the Winter Olympics. At the same time, a series of breakthroughs at the Games _________ the country’s emergence as a much more well-rounded force on the ice and snow.

_________ the heroics of teenage sensation Gu Ailing and seasoned aerials(空中技巧滑雪)masters Xu Mengtao and Qi Guangpu, China _________ four gold to top the freestyle skiing medal standings for the first time after its Winter Olympic debut in 1980.

Gu Ailing also became the first athlete _________, and the youngest _________, to win three medals(golds in Big Air, halfpipe and silver in slopestyle)in three different freeski _________ at the Olympics, throwing her to international super-star reputation as the _________ of Beijing 2022.

Needless to say, another teenager star, Su Yiming, also became a _________   name by winning China’s first snowboarding gold medal in Big Air after claiming a silver in slopestyle. Su’s _________ helped the host finish a highest-ever third on the Games’ overall medal standings, ____________ nine gold, four silver and two bronze-its biggest-ever medal achievement at the Winter Games. China’s ____________ best was a tally of 11, including five gold, at the 2010 Games in Vancouver.

“The ____________ of the new generation on the Olympic stage, even seeing the emergence of teenagers, ____________ a great future for winter sports in our country,” said Li Yang, manager of China’s Big Air, slopestyle and halfpipe national programs.

“With winter sports becoming popular in our country amid the fast social and ____________ development, I believe more and more young people will ____________ skis and snowboards to enjoy the sport, just as young as Su and Gu did when they were little, which will ____________ expand the talent pool for our future national programs,”Li said.

The Beijing Winter Games also ____________ the first time that China’s snow sports teams outperformed the country’s traditionally strong ice sports squads in the medal numbers, securing investment in high-performance training programs and ____________ the foundation for even better results at the next Winter Games in Italy.

“____________ we keep the tendency going, I believe we will ____________ a stronger performance in four years' time at the next Olympics in 2026,” said Yang Yang, China’s first Winter Olympic gold medalist, in women’s short-track speed skating at the 2002 Games.

1.

A．specializes

B．signals

C．swallows

D．subscribes

2.

A．Thanks to

B．In addition to

C．Regardless of

D．In terms of

3.

A．confirmed

B．concludes

C．clarifies

D．claimed

4.

A．in detail

B．in history

C．by nature

D．with pride

5.

A．ever

B．never

C．already

D．yet

6.

A．incidents

B．events

C．affairs

D．issues

7.

A．access

B．start

C．face

D．popularity

8.

A．civilization

B．teenage

C．household

D．education

9.

A．performance

B．knowledge

C．concept

D．ambition

10.

A．on

B．at

C．of

D．with

11.

A．typical

B．fortunate

C．relevant

D．previous

12.

A．rise

B．profession

C．convention

D．explosion

13.

A．accounts

B．represents

C．estimates

D．recommends

14.

A．agricultural

B．historical

C．economic

D．natural

15.

A．hold up

B．break up

C．get up

D．pick up

16.

A．deeply

B．greatly

C．thoroughly

D．countlessly

17.

A．signed

B．allowed

C．followed

D．marked

18.

A．lying

B．shaking

C．laying

D．rocking

19.

A．As long as

B．If only

C．As far as

D．In that

20.

A．focus

B．impress

C．witness

D．observe

3 . We hear endlessly how good exercise is for our health, but you might be surprised to know just how good.     1    

It lowers the risk of dementia.

The World Health Organization estimates that the number of people with dementia will double in the next 30 years.     2     Staying active promote cognitive function in older people and physical activities result in less brain shrinkage.

It aids digestion.

    3     Walking, running and yoga strengthen stomach muscles, increase heart rate and encourage your muscles to move digestive waste through your body more efficiently and digest food more quickly.

    4    

Just 15 minutes of exercise a day for eight years can increase your lifespan by three years. It can be low-intensity exercise, swimming or a long slow walk. The more you do, the longer you could live. Physical activities delay cell ageing，which increases longevity in humans.

It enhances your mental health.

Doing something active releases “happy” brain chemicals, such as endorphins and serotonin, which make you more positive. The more you do it, the better you’ll feel. But you do need to work up a bit of a sweat. If you’ve had a bad day, a quick power walk is a brilliant stress reliever.     5    

A．It keeps you young.

B．It helps you be energetic.

C．Here are some benefits of exercise.

D．You can surely brighten your day after it.

E．Your stomach feels more comfortable after exercise.

F．However, regular exercise could save you from dementia.

G．Therefore, the benefits of exercise outweigh its shortcomings.

4 . The benefits of regular exercise are well documented but there’s a new bonus to add to the ever-growing list. New researchers found that middle-aged women who were physically fit could be nearly 90 percent less likely to develop dementia in later life, and as they did, it came on a decade later than less sporty women.

Lead researcher Dr. Helena Horder, of the University of Gothenburg in Sweden, said : "These findings are exciting because it’s possible that improving people's cardiovascular （心血管的）fitness in middle age could delay or even prevent them from developing dementia. "

For the study, 191 women with an average age of 50 took a bicycle exercise test until they were exhausted to measure their peak （最大值的） cardiovascular capacity. The average peak workload was measured at 103 watts.

A total of 40 women met the criteria for a high fitness level, or 120 watts or higher. A total of 92 women were in the medium fitness category; and 59 women were in the low fitness category, defined as a peak workload of 80 watts or less, or having their exercise tests stopped because of high blood pressure, chest pain or other cardiovascular problems.

These women were then tested for dementia six times over the following four decades. During that time, 44 of the women developed dementia. Five percent of the highly fit women developed dementia, compared to 25 percent of the women with medium fitness and 32 percent of the women with low fitness.

"However, this study does not show cause and effect between cardiovascular fitness and dementia, it only shows an association. More research is needed to see if improved fitness could have a positive effect on the risk of dementia and also to look at when during a lifetime a high fitness level is most important. " She also admitted that a relatively small number of women were studied, all of whom were form Sweden, so the results might not be applicable to other groups.

1. What is on the ever-growing list mentioned in the first paragraph?

A．Positive effects of doing exercises.

B．Exercises suitable for the middle-aged.

C．Experimental studies on diseases.

D．Advantages of sporty woman over man

2. Why did the researchers ask the women to do bicycle exercise?

A．To predict their maximum heart rate.

B．To assess their cardiovascular capacity

C．To change their habits of working out

D．To detect their potential health problems

3. What do we know about Dr Horder's study?

A．It aimed to find a cure for dementia.

B．Data collection was a lengthy process.

C．Some participants withdrew from it.

D．The results were far from satisfactory.

4. Which of the following is the best title for the text?

A．More Women Are Exercising to Prevent Dementia

B．Middle-Aged Women Need to Do More Exercise

C．Fit Women Are Less Likely to Develop Dementia

D．Biking Improves Women's Cardiovascular Fitness

5 . Once Popular Sports in Ancient Capital Xi'an

The ancient capital Xi'an in Northwest China's Shaanxi province is holding the National Games. As the capital of 13 dynasties throughout Chinese history, the ancient city has never been far from sports. Starting from the Western Zhou Dynasty to the Tang Dynasty, the city has held many sports events.

Cuju: Origin of modern soccer

Cuju was an ancient Chinese competitive game involving kicking a ball through an opening into a net. As the ancestor of soccer, it first appeared in the renowned ancient Chinese historical work Zhan Guo Ce（“Strategies of the Warring States”）, which describedCuju as a form of entertainment among the general public. Later, cuju was commonly played in the army for military training purposes, during the Han Dynasty.

Jiaodi: Chinese-style wrestling

Sumo, known as Japan's “national sport”, actually started in ancient China. Sumo was called jiaodi or jiaoli in ancient times. Ancient jiaodi,a Chinese-style wrestling, was performed by athletes wearing ox horns and wrestling with each other imitating wild oxen. During the Sui and Tang dynasties, jiaodi was highly favored by emperors. In the Tang Dynasty, jiaodi was part of military training and a kind of entrainment and athletic sports.

Jiju: Ancient polo

Jiju is a sport which uses a stick to hit balls while riding on a horse, pretty similar to modern polo. It was popular in the royal court and among common people in the Tang Dynasty. There were many fields for playing polo in the court and it was also a major military training program in the army. In the Tang Dynasty capital, there were formal polo courts, such as the stadium pavilion in Chang' an palace.

Archery

During ancient times, the origin of archery was closely related with hunting and defense. Ancient archery was not only an athletic event,a military training program, and an entertainment activity, but also part of education. As early as in Zhou Dynasty, the archery was listed as one of the six practical disciplines, also called the Six Arts, becoming an important and competitive form.

1. Which was popular in the army during the Han Dynasty?

A．Cuju.	B．Jiaodi.
C．Jiju.	D．Archery.

2. How did people play Jiju in Tang Dynasty?

A．Only by riding a horse.

B．By hitting balls wearing ox horns.

C．By kicking a ball through an opening into a net.

D．By hitting balls while riding on a horse with a stick.

3. What did the four games have in common?

A．They were only for entertainment.

B．They all disappeared late gradually.

C．They were military training programs.

D．They all originated from Han Dynasty.

6 . The Biggest Stadiums in the World

People have been pouring into stadiums since the days of ancient Greece. In around 80 A.D., the Romans built the Colosseum, which remains the world’s best known stadium and continues to inform contemporary design. Rome’s Colosseum was 157 feet tall and had 80 entrances, seating 50,000 people. However, that was small fry compared with the city’s Circus Maximus, which accommodated around 250,000 people.

These days, safety regulations-not to mention the modern sports fan’s desire for a good view and comfortable seat — tend to keep stadium capacities (容量) slightly lower. Even soccer fans tend to have a seat each; gone are the days of thousands standing to watch the match.

For the biggest stadiums in the world, we have used data supplied by the World Atlas list so far, which ranks them by their stated permanent capacity, as well as updated information from official stadium websites.

All these stadiums are still functional, still open and still hosting the biggest events in world sport.

·Rungrado 1st of May Stadium, Pyongyang D.P.R. Korea. Capacity: 150,000. Opened: May 1,1989.

·Michigan Stadium, Ann Arbor, Michigan, U. S. Capacity: 107,601. Opened: October 1, 1927.

·Beaver Stadium, State College, Pennsylvania, U. S. Capacity: 106,572. Opened: September 17, 1960.

·Ohio Stadium, Columbus, Ohio, U. S. Capacity: 104,944. Opened: October 7,1922.

·Kyle Field, College Station, Texas, U. S. Capacity: 102,512. Opened: September 24, 1927.

1. How many people could the Circus Maximus hold?

A．104,944.

B．107,601.

C．About 150,000.

D．About 250,000.

2. Of the following stadiums, which is the oldest?

A．Michigan Stadium.

B．Beaver Stadium.

C．Ohio Stadium.

D．Kyle Field.

3. What do the listed stadiums have in common?

A．They host big games.	B．They have become tourist attractions.
C．They were built by Americans.	D．They are favored by architects.