Most of us have quite good memories, but our memories are limited. For example, we cannot remember everyone we have ever met or what we did on every single day of our lives. However, there are some people who do have prodigious memories. These people have a rare condition known as savant syndrome（学者症候群）. Savants suffer from a developmental disorder, but they also exhibit great talents that contrast（显出差异）sharply with their physical and mental disabilities.

    Kim Peek (1951-2009) was a savant who lived in Salt Lake City, Utah, in the United States. He was born with damage to parts of his brain, but it seemed that other parts of his brain, particularly those relating to memory, became over-developed.

    Peek's unique abilities appeared at a very early age. When he was just 20 months old, he could already remember every book that was read to him. Peek could read two pages of a book at the same time-one page with the right eye and one with the left-in less than 10 seconds and remember everything he read. By the time he died, Peek had memorized more than 9,000 books. He could remember all the names and numbers in a variety of telephone books. He could remember thousands of facts about history, literature, geography and sports.

    Dr. David Treffert, an expert on savant syndrome, once described Peek as “a living Google” because of his astonishing ability to memorize and connect facts. However, at the same time, Peek was unable to carry out simple tasks, such as brushing his hair or getting dressed, and he needed others to help him. In 1989, the movie Rain Man won the Oscar for best Picture. The main character in the movie, played by Dustin Hoffman, was based on Kim Peek's life. He started to appear on television, where he would amaze audiences by correctly answering difficult questions on different topics. Peek-became world famous, and he and his father began touring widely to talk about overcoming disabilities. He inspired a great many people with his words. “Recognizing and respecting differences in others, and treating everyone in the way you want them to treat you, will make our world a better place for everyone. Everyone is different.”

    Two summers ago I was about to tum fifty and wanted to do something I'd never done before. My daughter Bailey thought skydiving (跳伞) would be perfect for me. I can promise you that of all the things I was thinking of doing, jumping out of an airplane never came close to making the list. As I age, I seem to have developed a growing fear of heights.

    After several requests from my daughter, I finally said yes and she looked almost shocked. I told a friend what we were doing, then we set off. We had a 3-hour drive to the jump site. We drove through some beautiful countryside, but then we passed a small cemetery (基地) Then we passed another cemetery and another one. I asked if so many people died jumping out of airplanes in this area that they needed to keep building more cemeteries to bury all the bodies!

    As we squeezed into the little plane, I tightly held the right hand of my partner Ronnie. The short ride to altitude was cruel for me. As Bailey stepped to the door, she looked back at me and said “Dad, I'm sure you can do it!” I said yes as she rolled out, I immediately looked behind me and said “RONNIEI AM NOT FEELING GOOD” He said, “It's going to be great. Besides, it's too late now anyway”, any we jumped out.

    The next five minutes were some of the most exciting of my life. It was so beautiful and peaceful—except for the parts where I was screaming. I prayed to God for the parachute(降落伞)to open, but mostly I told Him how thankful I was for my life and being with me through good and bad.

    When I was in the fifth grade and Mr. Gardner asked a question, my hand would often shoot up in enthusiasm. After giving me a few opportunities, he would try to give other students a chance. My hand, though, would remain in the air, and after some time, I'd start waving it around. Then, there was the time I entered drumming classes. But all we were allowed to do in the first class was practice one beat over and over again. I never went back.

    I would have done terribly in the Stanford Marshmallow(果浆软糖) Experiment. In this classic study, researchers gave children a choice between one marshmallow right away and two later. The results showed that those who could wait 15 minutes ended up scoring 210 points higher on the SAT, an examination that American high school students take before they go to college.

    So clearly, delaying(延迟的) gratification or bearing up under pain have their benefits. It needs patience, which keeps us from being stuck to ideas formed previously, and helps us let go of our strong desire for consequences. We come to accept that we don't always or immediately know what is best, and learn to recognize that our reality is in constant changes. Patience improves our understanding of deeper truths and helps us expand our views.

    The journey of patience is rooted in knowing that our present reality will finally give way to changes. But changes won't always happen when we think they should, and patience with ourselves comes from accepting that there are things we can control and things we can't. And though we must make great efforts to keep pushing the boundaries of our awareness and to improve our ability to rest in comfort in the present moment, how fast we develop isn't up to us.

    That same fifth grader who couldn't wait to speak out answers now sees the value of meeting questions with a heart of patience.

    Japan has made a lot of noise in recent years about removing the traditional view that women should stay at home while men go out to work. So it was shocking when, on August 7th, Tokyo Medical University (TMU), a distinguished medical school, admitted marking down the test scores of female applicants to keep the ratio of women in each class below 30%.

    Their defence was that women are more likely to drop out to marry and have children. To judge female applicants to medical school purely on their academic performance would leave Japan with a shortage of doctors, they said. The admission has caused outrage.

    "Doctoring has long been a male field. But it is not the only one. Discrimination is common in banks and trading firms, where stamina (耐力) and loyalty, qualities somehow associated with men, are prized," says Mari Miura, a political scientist at Sophia University. All this embarrasses a government that has promised to make women "shine". The policy seems based on the need for more workers rather than on genuine concern for women.

    Shinzo Abe, the prime minister, says he wants to bring millions more women into the workforce to make up for a labour shortfall caused by its ageing and declining population. In the field of politics, the record under Mr. Abe's premiership (首相任期) is disappointing. Just two members of his 20-strong cabinet are women, including Seiko Noda, in charge of women's rights. Ms. Noda, who makes little secret of her ambition to beat Mr. Abe in a leadership contest next month, has just published a book called "Grab the Future", her public declaration for pulling Japan into line with "global standards". She has almost no chance of winning.

    On November 7, Lewis Pugh completed a one-kilometer swim in the freezing waters of King Edward Cove, off South Georgia in Antarctica. He was wearing only his swimming glasses, cap and speedos!

    Pugh is an advocate for our oceans and seas, working to protect these ecosystem with their large diversity of marine life. When asked why he doesn't wear a wetsuit, Lewis says, "I ask world leaders to do everything they can to protect our oceans. Sometimes the steps they need to take are difficult and unpopular. If I'm asking them to be courageous, I must also be. Swimming in a wetsuit would not send the right message."

    It took Pugh about 19 minutes to complete the one-kilometer swim in Antarctica where the water averaged about 1.6 degrees Celsius. He says that his body can only tolerate about 20 minutes in the freezing waters before it starts shutting down. As he swims, his body temperature steadily drops, which in turn causes his muscle control to drop, slowing him down. When he is done with his swim, his support team rushes him to a hot shower and it takes almost an hour for his body temperature to return to normal.

    Doctors and Pugh caution that one must receive months of training to swim in such cold waters. Even expert swimmers who are unused to freezing water can drown within minutes because of the physical shock experienced by the body. Pugh says he trained for six months before this swim.

    This is not the first time that Lewis has swum in dangerous conditions. In 2007, he swam one kilometer in the North Pole to draw attention to the melting Arctic ice due to climate change. In 2015, he swam in the Bay of Whales in Antarctica's Ross Sea as part of his successful campaign to help set up a marine reserve there.

The tooth is the hardest part of your body. Your teeth help you in many ways. For example, they can help you talk. They can also help you have a great smile. And the most important job of your teeth is to chew (咀嚼) your food. But do you know how your teeth grow? 

When you are born, you don't have any teeth. About 8 months later, small teeth begin to appear one by one. These teeth are called baby teeth. They are also called milk teeth. You won't have baby teeth forever. They usually begin to fall out when a child is about 6 years old. Then, permanent (永久的) teeth begin to appear. These teeth are larger and more powerful. Most people will have 28 permanent teeth by the time they are 12 years old. 

For some people, four more permanent teeth arrive by their 25th birthday. They are called wisdom teeth (智齿). But these teeth don't make you smart! Sometimes they bring you pain. If a wisdom tooth brings you too much pain, you should go to a dentist (牙医) and have it pulled out.