Roald Dahl is a beloved British writer. He is the writer of some of the world's best-known children's novels, including James and Giant Peach, Matilda, and Charlie and the Chocolate Factory.

    More than 250 million copies of his books have been sold worldwide. His works have been translated into 58 languages. Tuesday was Roald Dahl Day. People around the world celebrated what would have been Dahl's 100^th birthday. He was born in 1916 in Wales. He died in 1990.

    Roald Dahl Day was worldwide on social media(媒体). Many people thanked Dahl for making them truly enjoy reading. One Twitter user wrote, “My childhood was made magical because of the wonderful Roald Dahl. A great storyteller!” Another wrote, “You made me fall in love with reading—a love that has lasted me a lifetime.” Special events and celebrations were held in Britain and other countries in honor of Dahl.

    The Oxford English Dictionary marked Dahl's 100^th birthday by officially adding six Dahl-created words to its latest edition. They included words such as “Oompah- Loompah” and “scrumdiddlyumptious.”

    Oompah Loompahs are the factory workers in the book—Charlie and the Chocolate Factory. They had orange skin and green hair. They danced and played music. Oompah Loompahs became more famous after the 1971 film of the book, which starred Gene Wilder as candy maker Willy Wonka.

     “Scrumdiddlyumptious” is a word that appeared in Dahl's book- The BFG—short for The Big Friendly Giant. It generally means “delicious”. A film of The BFG, directed by Steven Spielberg, was released(发行)this year

    Earlier this year, Ocford released an entire Roald Dahl dictionary. It included more than 8,000 real and invented words used by the master storyteller.

    Ask someone what they have done to help the environment recently and they will almost certainly mention recycling. Recycling in the home is very important of course. However, being forced to recycle often means we already have more material than we need. We are dealing with the results of that over-consumption in the greenest way possible, but it would be far better if we did not need to bring so much material home in the first place.

    The total amount of packaging(包装) increased by 12% between 2010 and 2015. It now makes up a third of a typical household's waste in the UK. In many supermarkets nowadays food items are packaged twice with plastic and cardboard.

    Too much packaging is doing serious damage to the environment. The UK, for example, is running out of it for carrying this unnecessary waste. If such packaging is burnt, it gives off greenhouse gases which go on to cause the greenhouse effect. Recycling helps, but the process itself uses energy. The solution is not to produce such items in the first place. Food waste is a serious problem, too. Too many supermarkets encourage customers to buy more than they need. However, a few of them are coming round to the idea that this cannot continue, encouraging customers to reuse their plastic bags, for example.

    But this is not just about supermarkets. It is about all of us. We have learned to associate packaging with quality. We have learned to think that something unpackaged is of poor quality. This is especially true of food. But it also applies to a wide range of consumer products, which often have far more packaging than necessary.

    There are signs of hope. As more of us recycle, we are beginning to realise just how much unnecessary material we are collecting. We need to face the wastefulness of our consumer culture, but we have a mountain to climb.

    Donald Trump has been known to do it in the middle of the night. Kim Kardashian has done it more than 22,000 times. Many people don't understand why you would want to do it at all.

    We're talking about tweeting and, unlike posting your entire life on Facebook, this social media activity demands a particular set of skills.

    Why use Twitter? It's a way to have a one-on-one virtual connection with your heroes and anybody who interests you. Likewise, you can share your life and views with an almost limitless number of people. And it all has to be done within the limit of 140 characters of text – plus photos, videos and links – which really helps you focus your mind.

    Katy Perry has the most Twitter followers, with 95.6 million of the micro-blogging site's 317 million monthly active users. Justin Bieber isn't far behind with 91.5 million, followed by Barack Obama and Taylor Swift with around 83 million each. The heaviest hitters of Twitter are pop stars, heroes of sport and other celebrities. But you don't need to be famous to create a buzz with the right tweets at the right time.

    In fact, Katy Perry is a great example of how to do it well. She has a bubbly tweeting style that mashes up chat about her tours and her music, insights into her emotional roller coaster over the US election, and playful descriptions about her daily life. "Done with my Christmas shopping", she tweeted, and posted a link to her Instagram page that featured crazy gadgets like a "pet emergency jacket" and a "chocolate donut camera".

    To get started on Twitter, pick a simple, memorable user name like @KatyPerry, post a short profile and choose a photo. Some tips: post your own photo (not a photo of your dog, it's not Facebook) and don't be an "egg person" – referring to the absent egg-shaped image when a user hasn't posted their own picture. In that case, Twitter won't get you any followers or respect.

    Then, it's time to start tweeting by sending your updates ("what's happening?") and following people. Building up an army of followers can take time. Generally, the more people you follow and the more you tweet, the more followers you'll get. To become a Twitter star, you need to carve out a reputation for posting original, eye-catching tweets on trending topics – and maximise your visibility by mastering the use of hashtags.

    Twitter Analytics will show you how your tweets are performing and who is following you – right down to their age category, country, income bracket, gender and interests. If your popularity is flagging and your Twitter ego is keeping you awake at night, you can turn to the business of buying thousands of "followers" from online sites. But do be ware – there may be a lot of fake profiles in there and, at the end of the day, it'll feel like paying a crowd of people you don't know to come to your birthday party.

    Happy tweeting!

    A car dealership in my hometown of Albuquerque was selling six to eight new cars a day. I was also told that 72 percent of this dealership's first-time visitors returned for a second visit.

    I was curious. How does a car dealership get 72 percent of its first-time visitors to return? And how can they sell six to eight cars a day in a declining car market?

    When I walked into Saturn of Albuquerque that Friday, the staff there didn't know me from Adam; yet they shared with me their pricing policy, the profit margin on every model, and staff income. They even opened their training manuals for my review and invited me back on Saturday if I wanted more information.

    On Sunday, the day after my second visit to the Saturn store, my wife, Jane, and I were walking as we frequently do. On this particular June morning, Jane gently slipped her hand in mine and said tenderly, ＂I don't know if you remember, but today's my fifth anniversary of being cancer-free.＂ I was surprised, partially because I was embarrassed that I had forgotten and, partially because.... Well, I didn't know what to do with Jane's information.

    The next day, Monday, Jane went off to work teaching school. Still not knowing what to do to mark this special occasion, I did the most impetuous thing I've ever done in my life: I bought a new Saturn. I didn't pick the color or the model, but I paid cash and told them I'd bring Jane in on Wednesday at 4:30. I told them why I was buying the car.

    On Tuesday, it dawned on me that Jane always wanted a white car. I called the sales consultant at Saturn, and I asked him if he had anything white in the store. He said he had one left but he couldn't guarantee it'd still be available on Wednesday at 4:30 because they were selling so fast. I said I'd take my chances and asked him to put it in the showroom.

    Wednesday came. Unexpectedly, someone in our family was admitted to the hospital. So, it wasn't until 9:30 Saturday morning when we finally made our way to the Saturn store. Jane had never been in a Saturn store. When we went through the front door, the Lord took control of her feet and her mouth. She saw that little white Saturn coupe all the way across the showroom floor. She quickly passed a multi-colored sea of automobiles, sat in the little white Saturn and said, ＂Oh, what a pretty little car. Can I have a new car?＂ I said, ＂No. Not until our son graduates from college.＂ She said, ＂I'm sick and tired of driving that old Dodge, I want a new car.＂ I said, ＂I promise, just three more semesters and he'll be out.＂

    Next, Jane walked around to the front of the car. As she looked it over, she let out the most blood-curdling, shrill scream I'd ever heard in 29 years of marriage.

    Now, before I tell you why Jane screamed, let me tell you what the sales consultant had done. He had ordered a large, professionally engraved sign (white letters on blue). The sign stood alone on the hood of the little white Saturn coupe. It said ＂Congratulations, Jane. This car is yours. Five years cancer-free. Let's celebrate life. From Team Saturn＂ Every employee at Saturn of Albuquerque had signed the back of that sign.

    Jane saw it, screamed, collapsed in my arms and cried loudly. I didn't know what to do. I was in tears. I took out my invoice (发票) from the previous Monday, pointing to the white coupe, said, ＂No, honey, this car isn't yours. I bought you this one.＂ I tapped the invoice with my index finger. Jane said, ＂No, I want this one right here.＂

    While this conversation was going on, there was no one in the store. The sales consultant had arranged it so that we could share the moment alone. Even so, it's impossible to have a lot of privacy when so many people are standing outside the showroom windows looking in. When Jane screamed and collapsed in my arms, I saw everybody outside applaud and begin to cry.

    Some places in the world have strange laws. It's important for you to know about them before going there.

    Whoever likes to chew gum (口香糖) may have to leave Singapore. The government really wants to keep the city clean and will fine you for chewing gum.

    Before you leave for the United Arab Emirates you'd better make sure you aren't visiting during Ramadan (斋月). During that time you aren't allowed to eat or drink in public. Tourists have been fined up to $275 for drinking in public.

Lovers spend so much time kissing each other goodbye at train stations that trains often start late. This law—no kissing your lover goodbye at train stations—is rather old, and isn't in use today in France.

In Thailand it's against the law to drive a car or motorcycle without a shirt on, no matter how hot it is. Punishments are different in different areas and can include warnings and tickets costing about $10. No joke —the local police will stop you.

    Studies in Denmark have shown that cars with their headlights on are more noticeable by other drivers than those with their headlights off. Drivers there are required to leave their headlights on even during the day, or they may face a fine up to $100.

    Do you often buy things using coins? Don't do it in Canada. The Currency Law of 1985 doesn't allow using only coins to buy things. Even the use of the dollar-coin is limited (受限制的). The shop owner has the right to choose whether to take your coins or not.

    Make sure you know about these laws before your next trip. Better safe than sorry.

    Race walking shares many fitness benefits with running, research shows, while most likely contributing to fewer injuries. It does, however, have its own problem.

    Race walkers are conditioned athletes. The longest track and field event at the Summer Olympics is the 50-kilometer race walk, which is about five miles longer than the marathon. But the sport's rules require that a race walker's knees stay straight through most of the leg swing and one foot remain in contact (接触) with the ground at all times. It's this strange form that makes race walking such an attractive activity, however, says Jaclyn Norberg, an assistant professor of exercise science at Salem State University in Salem, Mass.

    Like running, race walking is physically demanding, she says, According to most calculations, race walkers moving at a pace of six miles per hour would burn about 800 calories(卡路里) per hour, which is approximately twice as many as they would burn walking, although fewer than running, which would probably burn about 1,000 or more calories per hour.

    However, race walking does not pound the body as much as running does, Dr. Norberg says. According to her research, runners hit the ground with as much as four times their body weight per step, while race walkers, who do not leave the ground, create only about 1.4 times their body weight with each step.

    As a result, she says, some of the injuries associated with running, such as runner's knee, are uncommon among race walkers. But the sport's strange form does place considerable stress on the ankles and hips, so people with a history of such injuries might want to be cautious in adopting the sport. In fact, anyone wishing to try race walking should probably first consult a coach or experienced racer to learn proper technique, she says. It takes some practice.