1 . 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.

2 . An Olympic Village is a place that houses Olympic competitors. It is a place where they prepare for what might be the most important moment in their life. But we want to know more about this mysterious place: What really happens in the village?

We asked swimmer Natalie Coughlin, a three time Olympian and 12 -time medalist. She says, “People think it’s a lot more attractive and interesting than it is. It isn’t. It’s like a huge college campus, including a bank, a salon, a post office, and a huge cafeteria- except that everyone is anxious, getting ready for their biggest event under unbelievably high pressure (压力).”

But some other Olympians look differently at their campus. “It’s like the first day of college,” water polo player Tony Azevedo says. “You’re super excited. Everyone s meeting people and trying to socialize with others,”

Coughlin says the best spot to be in the village is the cafeteria. Not only does it provide a place to talk with the rest of the athletes from your country but it’s a great chance for people watching. One of her favorite games was to tell what sport someone in front of her took based on their body type.

Living in the same village means athletes run into one another all the time. Coughlin shares this story: While in London in 2012, at one point applause (欢呼) broke out at the arrival of someone. Coughlin thought it was one of the British royals (王室成员), but it ended up being Jamaica’s Usain Bolt (the world’s greatest runner alive). Runner Allyson Felix— a winner of six gold Olympic medals— has also had her run-ins. In 2008, she came across the world-famous U. S. men’s basketball team, including Anthony, Bryant, Wade and other top players.

It’s “a pretty wild scene, the biggest melting pot— a place where large numbers of people, ideas, and cultures are mixed together— you’ve been in,” said swimmer Eric Shanteau. Felix agrees, saying, “You get to meet people from other countries that you wouldn’t even come into contact with. To me that’s the coolest thing.

Table tennis first     1     (appear) during Victorian England. Table tennis didn’t become a competitive sport until 1988. Now table tennis not only is a matter of competition, but also provides an opportunity for people to play together no matter what their ages are. There is a day for people     2     love table tennis to spread their love for the sport. It     3     (call) World Table Tennis Day.

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