2 . A fresh and gentle wind on your face, soft sand under your feet and blue waters as far as the eye can see. Is there any other Olympic sport that is played in such pleasant conditions as beach volleyball？

“I’ve gone to a lot of beautiful places, and met a lot of beautiful people. That wouldn’t have happened if I had been playing another sport.” said Randy Stoklos, America’s most famous beach volleyball player.

The sport began as a four-a-side game on beaches in Southern California in the 1920s. The first recorded two-man game took place there in 1930, and the first tournament (锦标赛) was held in Los Angeles 18 years later. The winners were awarded a case of Pepsi. In the 1950s, women started playing and the sport soon spread to Europe and South America. Yet at that time, beach volleyball was more an entertainment show than a sport, with beauty contests included. The Association of Volleyball Professionals was founded in 1983 and beach volleyball developed into a fast, athletic sport. Its world-wide popularity won beach volleyball a place at the 1996 Olympics in Atalanta, where 24 male teams and 16 female teams took part. At present, the US and Brazil are the best in the world at beach volleyball.

The game came to China in the early 1990s and there have been national tournaments since 1994. It became an official event at the Eighth National Games in 1997. China’s You Wenhui and Wang Lu finished ninth in the women’s beach volleyball world championships in Brazil.

Both the Winter and the Summer Olympic Games are held on a regular    1    . The Winter Olympics are usually held two years before the Summer Games. Every country wants to host the Olympic Games because they thought it not only a     2     but also an honor to be chosen.

8 . The COVID-19 illness causes mild or moderate symptoms for most but severe symptoms are more likely in the elderly or people with existing health problems. Most infected patients have recovered from it so far.

The leader of the IOCS coordination commission for the Tokyo Olympics says there is no May deadline to cancel the games and he remains confident the event will go ahead despite sports coming to a stop globally amid the coronavirus epidemic. John Coates, who will have to go into government-mandated self-isolation when he returns to Australia this week from Olympic business in Europe, told the Sydney Morning Herald newspaper: “It’s all proceeding to start on the 24th of July.” Dick Pound, a former IOC vice president, said that the end of May seemed to be a possible deadline for the IOC to make a call on the Tokyo Olympics. But Coates told that the IOC didn't recognize the deadline and he thought Pound had backed away from it, too.

The latest measures, which include bans on gatherings of more than 500 people, came in the wake of the suspensionz（暂停） of sporting events in parts of the world affected by the virus outbreak. That has caused postponements and uncertainty for qualifying in some Olympic sports, although the IOC and Tokyo organizers have consistently said the games will go ahead as scheduled. As for athletes traveling to Japan from affected countries. Coates said some national Olympic committees were already preparing. “The Chinese are probably the best organized,” he told the SMH. “The Chinese are in various parts of Europe and the last I heard is they're bringing them all together in a university in Paris where they'll be fully contained, 600 of them, and they will go straight from there, straight into Japan. They won’t put anyone on a plane who has got coronavirus.

9 . For many Americans, regular exercise is a complicated commitment—one made at the beginning of January that fades out within weeks or months. Busy work schedules, a lack of motivation and unease towards exercising in public all contribute to the discouraging statistics that only around a quarter of adults exercise enough per week.

This month, enterptiser Trent Ward and designer Yves Behar are uncovering their design for a mirror fitness system, Forme. Forme is reflective like a mirror, uses machine learning to heighten workouts, and offers attachments including ankle belts, rope handles and a heart rate monitor. When not in use, the two arms that form the resistance pulley (滑轮) system fold behind it and the display screen disappears, turning Forme into a simple full—length mirror.

Interest in home exercise has particularly increased recently around the world. Home workout apps have seen a significant uptick in downloads, and trendy brands like Peloton have rolled out free virtual workouts for everyone stuck indoors. One French athlete who was kept away from others chose to run an entire marathon on his 23-foot balcony.

But beyond the new restrictions affecting daily workout routines, Ward and Behar are tapping into the same concerns that have made every home workout appealing：the ability to save time and sweat in the privacy of one’s home. In an age of personal metrics (衡量标准)--where one can measure their heart rate and sleep cycles with smart watches and train for marathons with AI smart sneakers----Ward and Behar want to improve exercise through machine learning. Forme evaluates performance and adjusts weights accordingly. Easy access to one’s own performance data also makes it easier to track that progress and stay motivated.

Though it’s too soon to tell if mirror gyms will be the trend of the late 2010s to 2020s, Behar explained that having a screen in the home can become the basis for more than just fitness, such as shopping or telemedicine.

10 . A recent study shows that more years of school could help students get higher scores on intelligence tests. That was the finding of a study of teenage males in Norway. Now, other research shows that_______activity may help students do better in their classes.

The research comes as educators in some countries are reducing time for activities like physical education. They are using the time instead for_________subjects like math and reading.

Researchers at VU University Medical Center in Amsterdam_______the results of fourteen studies, which included more than fifty-five thousand children, aged six to eighteen.

Research Amika Singh says the studies showed a _______between physical activity and scores on subjects such as Math, English and reading. “Based on the results of our study we can conclude that being physically active is_______for academic performance.”

Ms. Singh_________some possible explanations. “There are, first, physiological explanations, like more blood flow, and so more oxygen to the brain. Being physically_______means there are more hormones produced like endorphins（内啡肽）. And endorphins make your stress level lower and your mood improved, which means you also_______better.”

Also, students_______in organized sports learn rules and how to follow them. This could improve their classroom________and help them keep their mind on their work.

The study__________some questions unanswered, however. Ms. Singh says it is not possible to say whether the amounts or kind of activity________the level of academic improvement. This is because of differences among the studies.

Also, they were mostly observational studies. An observational study is where researchers do not do controlled comparisons. They only describe what they observe. So they might observe a link that students who are more active often have better grades. But that does not__________mean being active was the cause of those higher grades. Therefore, more high-quality studies are needed to ________their findings.

Still, the general finding was that physically active kids are more likely to do better in school. Ms. Singh says schools should consider that finding before they________physical education programs.