I returned home the other night, tired. My husband asked me how my evening was, “Great.” I told him. I had spent 90 minutes in a gym with 10 Ping-Pong tables and all kinds of players, all playing a little ball over the net. By 9 pm, I was excited, tired, satisfied. I had beaten two young men half my age and lost battles against other competitors. To an observer, the night was common. To me, it was a lucky thing that I hadn't expected.

    I had taken up Ping-Pong during college, and in my 30s took more advanced lessons. However, a serious accident hurt my leg, which made me unable to take exercise. Months later, I tried to play Ping-Pong but my leg pained for a week. I put the game out of my mind.

When I was 53, one day my bad leg was working a little bit better. Could Ping-Pong be possible for me, now—in my condition, at my age? I tried to play Ping-Pong again

    Ping-Pong is a sport which requires endurance(耐力). Players need quick foot work and upper body movements to return balls, requiring faster response time than tennis.

    Playing Ping-Pong offers benefits for the brain. A study of 164 women aged 60 and older showed that Ping-Pong improved cognitive(认知)function more than dancing, walking or gymnastics. “The great thing about our sport is that it can be played by anyone,” said Jimmy Butler, a four-time national USA Table Tennis Association winner. “I see 90-year-olds and 10-year-olds.”

    Years passed and my endurance improved. People started to praise my shots. I won a game. Then I won agin. These days, I feel wonderful, I believe this sport is the fountain (源泉)of youth.

D

    With the development of the television and the Internet, many people have changed their hobbies and the way that they enjoy their free time. Because of the television and the Internet, many people spend less time reading, so the aim of this article is to give reasons why people should read just for pleasure. The reasons that I give you are quite simple: to improve your knowledge, to have more fun, to make your imagination（想象）fly, to find new ways to express your ideas, and to have a better understanding of life.

    Firstly, you can improve your knowledge when you read. There are nil kinds of good books to choose from. People who read more usually have a better idea about life than those who do not read so often.

    Secondly, you can have fun and increase your imagination by reading books Children have very good imaginations, so parents need to read lots of stories that feed their imagination. Adults should try to develop their imagination by reading books that make them think amazing things.

    Finally, no matter how old you are, it can help you to have a better understanding of life and express your ideas to others in a simple and correct form.

    So I suggest that you read more. I know that many of us like to play on the Internet when we are free, but we must also not forget to read books. Try to choose good books in the beginning, and then I'm sure that you will never stop reading.

    You may hear about some people who have walked on the moon. Of the outstanding astronauts listed below, who do you think was the most influential in human's history?

Pete Conrad (Apollo 12)

    Because of his dyslexia（阅读障碍）, Pete always failed in his study and had to leave school. Then his father sent him to Darrow School, where he performed so well that he won a Naval Reserve Officers Training Corps (NROTC) scholarship. He took the NASA's test, but his dyslexia ruined the opportunity.

    It was because of Alan Shepard's persuasion that Pete decided to apply again for NASA. He was chosen as the commander of Apollo 12. He landed on the moon on Nov 19, 1969 and spent 31 hours there.

Neil Armstrong (Apollo 11)

    Armstrong's biggest moment came in 1969, when he was chosen for NASA's first manned lunar mission (登月任务), along with Edwin Aldrin and Michael Collins. On July 21, 1969, he set foot on the surface of the moon. which made him the first human to do so. He stayed on the moon for 21 hours. After returning, Armstrong became an international star and was honored worldwide.

John Young (Apollo 16)

    Young was made the commander of Apollo 16, which landed on the moon on April 16, 1972. He spent two days and 23 hours on the moon. Young retired from NASA after serving for around 42 years, which made him the man ever to work for NASA for the longest time.

Edgar Mitchell(Apollo 14)

    Edgar was selected by NASA in 1966, and was later made the lunar pilot of Apollo 14. He followed his commander Alan Shepard onto the moon, staying there for 1 day and 9 hours. Edgar has expressed his firm belief that UFOS belong to other planets. He also firmly believes that American government is in possession of some “recovered alien bodies.”

    It was Sunday, so Dad and I were at the second-hand goods market, looking for tools, appliances(家用电器), and other things that needed cleaning. Some were broken; others, like silver cups, just needed to be cleaned and polished. It was 1974, and the Depression(经济大萧条) was very serious. Dad worked full-time at a factory, but the money wasn't enough. Dad had tried a second job for a while, but he found it was too hard on the family. One day, he had an excellent idea that set me on a lifelong course of making money to support myself. Standing beside a crowded table at the second-hand goods market, I looked over an ancient manual sewing machine. Someone had changed it to run on electric power. It was much older than Mom's machine, but it looked like it had quality and a long life built into it. "Dad!" I called. "This is a beauty!"

    Dad walked over, pulling a cart full of audio equipment, tools, worn-out appliances, and what appeared to be a block of dull kitchen knife." What have you got, Son?" I described what I saw and what I figured I could do to x the beauty up. Dad paid for my discovery, and we headed home.

    Every day after school I worked on the ancient machine, and every night Dad and I sharpened tools and knives, sanded off rust, polished metal, and replaced missing parts from various items. The next Saturday we headed off, as we did every weekend, to that same market, where we sold the treasures we'd purchased the week before—at a tidy profit. My antique beauty brought in more money than anything else, and Dad let me keep every penny.

    Dad's gone now, but I can never thank him enough. Even if we hadn't needed the extra money Dad and I brought in, I wouldn't have traded those weekends for all the picnics or Little League games in St. Louis—not in a million years.

    One of the great concerns that ornithologists have is that climate change will throw the nesting activities of birds out of sync (同步) with the availability of food for the raising of chicks. For one species, the pied flycatcher, a new study shows that some of its clan are proving to be remarkably adaptable.

    Upon returning to Europe from their African wintering grounds, the flycatchers time their egg-laying to the short period when juicy caterpillars (毛毛虫) are most abundant. During the past three decades this caterpillar peak has advanced by three weeks. Pied flycatchers initially had difficulty adjusting, but over time have started laying their eggs earlier to grab the caterpillars. Some, though, are doing a lot more to improve their reproductive chances of success, according to a study in the Journal of Avian Biology led by Christian Both of the University of Groningen, in the Netherlands.

    Like most bird species, pied flycatchers have long been thought to lay a single clutch of eggs during the breeding (繁殖) season. This was widely considered to be a trait that wouldn't change. Then, in 2007, a Swiss team led by Dr Ravussin began to suspect that clutch numbers were flexible. They discovered a female pied flycatcher that immediately produced a second brood with a new male after raising an early set of chicks. Aware of Dr Ravussin's findings, Dr Both wondered whether this was just a single, odd instance or if second broods might be happening on a larger scale driven by the arrival of earlier springs. So, they cooperate to delve into the data to find out.

    The team studied pied-flycatcher populations in the Netherlands and Switzerland that were known to be among the earliest nesting members of the species. In total, they tracked the egg-laying times and hatchling-rearing success of 8,848 breeding pairs in the Netherlands and1, 372 in Switzerland between1980 and 2018. They found that since 2006, 11 cases of second broods were observed, all of them among the earliest breeders in both populations.

    Further studies ruled out that the birds were making up for a failed first attempt at raising chicks or that the second group of nestlings suffered.

    With no obvious downside to laying a double clutch, Drs Both and Ravussin conclude that the birds are attempting to double their annual reproductive output. While this behavior is still rare, they argue that if the tendency is driven by heritable genes (which it may well be), then a succession of early springs could make the strategy much more common.

A 16th century drawing by one of the key figures of the German Renaissance has been valued in excess of $10 million after it was initially purchased at a yard sale for just $30 in 2017.According to Agnews Gallery—the London auction house in possession of the artwork—Albrecht Dürer,who died in 1528,is regarded as both the greatest German artist of his time and as one of the most important artists and intellectuals of the European Renaissance.The drawing that has been rediscovered is titled "The Virgin and Child".As Dürer's career and legacy have been studied in depth since his death,it is extremely rare to find unknown works of his.

Boston-based art collector Clifford Schorer,who is a consultant to the gallery,added Thursday that he came across the rare artwork,thought to have been completed in 1503,by chance on the way to a party in Massachusetts in 2019.He had forgotten to bring a gift to the party,so he went to a bookstore,which sold collectable volumes.The bookseller told him his friend had a Dürer drawing and asked if he would take a look at it.Schorer agreed,but held out little hope.

The artwork had been purchased at a yard sale at the home of an architect who had been gifted the piece from his art dealer father,Schorer said."Generally speaking,it's an inverse(反向的) relationship between how dramatic the claim is and how much of a let down it is.For example if someone tells me they have a Leonardo da Vinci,I'm usually pretty confident I'm going to see some images that are unimpressive," Schorer said.

But when he arrived to examine the artwork weeks later,he was taken aback by its quality."It was like experiencing a kind of electricity.When you're in my world you spend your life looking for unknown things that lead to fascinating research avenues...and I could see I was at the beginning of something extremely exciting," Schorer said.