【推荐1】My parents love tennis and they’re members of a tennis club. My older brother was really good at it and they supported him—taking him to lessons all the time. So when I announced I wanted to be a tennis champion when I grew up, I just intended for them to notice me. My mother laughed. She knew I couldn't possibly be serious, for I was just a 4-year-old kid!

Later, I joined the club’s junior coaching group and eventually took part in my first proper contest, believing that my team would do well. We won, which was fantastic, but I wasn’t so successful. I didn’t even want to be in the team photo because I didn't feel I deserved to be. When my coach asked what happened in my final match, I didn’t know what to say. I couldn’t believe I’d lost. I thought I was the better player. But every time I attacked, the other player defended well. I couldn’t explain the result.

After that, I decided to listen more carefully to my coach because he had lots of tips. I realised that I need the right attitude to be a winner. On the court I have a plan but sometimes the other guy will do something unexpected so I’ll change it. If I lose a point, I do my best to forget it and find a way to win the next one.

At tournaments, it’s impossible to avoid players who explode in anger. Lots of players can be negative, including myself sometimes. Once I felt angry and nearly broke my racket! But my coach has helped me develop ways to control those feelings. After all, the judges have a hard job and you just have to accept their decisions.

My coach demands that I train in the gym to make sure I'm strong right to the end of a tournament. I’m getting good results; my shots are more accurate and there’s a chance that I could be a champion one day with hard work.

【推荐1】We are fortunate to live in a city that encourages bicycling as a means of transportation.Our local government has promoted bicycling by improving bike lanes and increasing the number of them. The growing number of cyclists, however, brings this question to mind: should bicyclists be required to share the responsibilities of the road? Automobile drivers have to take competency tests, follow established regulations, and accept punishment for breaking rules. The city requests drivers to register and license their vehicles to ensure accountability (责任）. Bicyclists who use public roadways should be held accountable, too.

Let's look at what sharing the road means. For one thing, it should involve cost sharing.Auto registration and license fees are used, in part, for building and maintaining roadways. It seems only reasonable to ask bicyclists to contribute to transportation funding as well.

More importantly,sharing the road includes accountability. When drivers ignore the rules of the road, the police and other motorists have the opportunity to identify them by their license plate number and report their offenses (违法行为）。 This isn't true for bicyclists. I've seen bicyclists moving quickly between lanes.Because they show no identification, they feel protected by anonymity(匿名）。What good would it do to report to the police “I saw a guy on a red bike blow through the stoplight"? The simple act of making bicyclists identifiable would encourage safer, more responsible riding.

Of course,I've heard arguments against asking cyclists to register and license their bikes. Some people might say, “Little kids ride bikes. Would you require a six-year-old rider to take a test and pay a fee?" Obviously, the city could determine an age when cycling would be considered a "means of transportation on public roads." Other people argue that bicycle fees are unfair because bikes don't damage the roadways as cars do. Bicycle registration fees could be comparatively modest, and the method for displaying a license number could be simple.

Many U.S. cities and towns now implement bike registration and licensing. A statute(法规）from one. California town states that the laws regulating bicycles have a dual purpose, antitheft and safety. I'm eager to see more bicyclists on the road, and I'm hoping for riders who take their responsibilities seriously.

【推荐3】Self-driving cars are just around the corner. Such vehicles will make getting from one place to another safer and less stressful. They also could cut down on traffic, reduce pollution and limit accidents. But how should driverless cars handle emergencies (突发情况)? People disagree on the answer. And that might put the brakes on this technology, a new study concludes.

To understand the challenge, imagine a car that suddenly meets some pedestrians in the road. Even with braking, it’s too late to avoid a crash. So the car’s artificial intelligence must decide whether to swerve (急转弯). To save the pedestrians, should the car swerve off the road or swerve into oncoming traffic? What if such options would likely kill the car’s passengers?

Researchers used online surveys to study people’s attitudes about such situations with driverless cars. Survey participants mostly agreed that driverless cars should be designed to protect the most people. That included swerving into walls (or otherwise sacrificing their passengers) to save a larger number of pedestrians. But there is a hitch (困境). Those same surveyed people want to ride in cars that protect passengers at all costs — even if the pedestrians would now end up dying. Jean Bonnefon is a psychologist at the Toulouse School of Economics in France. He and his colleagues reported their findings in Science.

“Autonomous cars can completely change transportation”, says study coauthor Iyad Rahwan. But, he adds, this new technology creates a moral dilemma (道德两难) that could slow its acceptance.

Makers of driverless cars are in a tough spot, Bonnefon’s group warns. Most buyers would want their car to be programmed to protect them in preference to other people. However, regulations might one day instruct that cars must act for the greater good. That would mean saving the most people. But the scientists think rules like this could drive away buyers. If so, all the potential benefits of driverless cars would be lost.

Compromises might be possible, Kurt Gray says. He is a psychologist at the University of North Carolina. He thinks that even if all driverless cars are programmed to protect their passengers in emergencies, traffic accidents will decrease. Those vehicles might be dangerous to pedestrians on rare occasions. But they “won’t speed, won’t drive drunk and won’t text while driving, which would be a win for society.”

【推荐3】Simone Biles was born in 1997. Soon, her parents found that she couldn’t sit still. When she was 6 years old, her day-care group went on a field trip to a gym. Simone loved watching the gymnasts train and performances. She couldn’t just watch them, though—she had to try their moves. She was so good that one of the coaches sent a letter home with her, inviting Simone to take gymnastics classes.

Simone loved the classes, and she was excellent at climbing, swinging, jumping, and tumbling(翻筋斗). Though she had a lot to learn, the coaches could hardly keep up with Simone. When one, girl performed a standing back tuck(翻折), Simone was sure she could do one too. Her coach didn’t believe her, so Simone tried the trick and made it on the spot.

At 9, Simone learned why she couldn’t sit still: She had ADHD(多动症). Her brain moved fast and her body did too—which made it hard for her to concentrate in school but which also made her an amazing gymnast. “The challenges we face help define who we are,” Simone, wrote. “My challenge is also my superpower.” Simone’s superpower would help make her one of the most dynamic gymnasts ever seen.

Simone is one of the greatest athletes in history. At age 16, she won two gold medals at the Artistic Gymnastics World Championships(AGWC), including the all-around(the total score from competing in all events). She has now won 25 world medals, 19 of them gold. That’s the most in world gymnastics history.

Simone competed in her first Olympics in 2016. She was the first female U. S. gymnast to win four gold medals in an Olympic Games. Since then, Simone has debuted(首次呈现)some moves never successfully done in world competitions, including a double-double dismount(下马)from the balance beam. The move became known as the Biles. Several signature moves have been named after Simone.