How fit are your teeth? Are you lazy about brushing them? Never fear: An inventor is on the case. An electric toothbrush senses how long and how well you brush, and it lets you track your performance on your phone.

    The Kolibree toothbrush was exhibited at the International Consumer Electronics Show in Las Vegas this week. It senses how it is moved and can send the information to an Android phone or iPhone via a Bluetooth wireless connection.

    The toothbrush will be able to teach you to brush right (don't forget the insides of the teeth!) and make sure you're brushing long enough. “It's kind of like having a doctor actually watch your brushing on a day-to-day basis,” says Thomas Serval, the French inventor.

    The toothbrush will also be able to talk to other applications(应用) on your phone, so developers could, for example, create a game controlled by your toothbrush. You could score points for beating monsters(怪物) among your teeth. “We try to make it smart but also fun,” Serval says.

    Serval says he was inspired by his experience as a father. He would come home from work and ask his kids if they had brushed their teeth. They said “yes,” but Serval would find their toothbrush heads dry. He decided he needed a brush that really told him how well his children brushed.

    The company says the Kolibree will go on sale this summer, for $99 to $199, depending on features. The U.S. is the first target market.

    Serval says that one day, it'll be possible to replace the brush on the handle with a brushing unit that also has a camera. The camera can even examine holes in your teeth while you brush.

WELCOME

    Welcome to Windsor Castle, the oldest and largest occupied castle in the world. Windsor is one the official residences (住所) of the Queen, who sometimes stays here.

    Audio tours

    Free audio tours are available on leaving the Admission Centre at the start of your visit. There is a descriptive audio tour for blind and poor-sighted visitors.

    Guided tours

    Visitors can explore the history of the Castle through a tour of the Precincts with an expert guide. Tours depart at regular intervals throughout the day from the Courtyard and finish at the entrance to the State Apartments.

    Visitors with children

    For those visiting with children, a special family tour and various activities are offered during school holidays and at weekends. Please note that, for safety reasons, pushchairs are not permitted in the State Apartments. However, baby carriers are available to borrow.

    St George's Chapel

    Visitors arriving at the Castle after 15:00 from March to October are advised to visit St George's Chapel first, before it closes.

    Shopping

    Shops offer a wide range of souvenirs designed for the Royal Collection, including books, postcards, china, jewellery, and children's toys. Please ask at the Middle Ward shop about our home delivery service.

    Refreshments

    Bottled water can be purchased from the Courtyard and Middle Ward shops. From April to September ice cream is also available, Visitors wishing to leave the Castle for refreshments in the town may obtain re-entry permits from the castle shops. Eating and drinking are not permitted in the State Apartments or St George's Chapel.

    Photography and mobile phones

    Non-commercial photography and filming are welcomed in the Castle. Photography, video recording and filming are not permitted inside the State Apartments or St George's Chapel. Mobile phone must be switched off inside the State Apartments and St George's Chapel in consideration of other visitors.

    Security

    As Windsor Castle is a working royal palace, visitors and their belongings should get through airport-style security checks. For safety and security reasons a one-way system operates along the visitor route.

    What will you think of when it comes to “Hong Kong” and “great swimming”? Shopping sure, but swimming pool? Turns out, along with all its other attractions, Hong Kong is loaded with wonderful pools.

    The Ritz－Carlton

    The pool at the Ritz－Carlton is breathtaking, thanks to the view, the altitude and, of course, the swim. On the 118th floor at 484 meters above the street in the tallest building in Hong Kong, it's the world's highest swimming pool. The ceiling and walls are made up of 144 LED screens displaying coral reefs and other natural scenes.

    W Hotel Hong Kong

    If you have only one nice swimsuit, save it for the W Hotel Hong Kong. Only people living in this hotel can enjoy this wonderful pool, which is Hong Kong's highest rooftop pool. The hotel's signature WET deck is famous for stylish and occasionally wild poolside parties in summer. WET also features a good cocktail bar and a Jacuzzi.

    Hotel Indigo

    One of Hong Kong's unique experiences is swimming in Hotel Indigo's glass bottom pool. The pool protrudes from the hotel, allowing people below to see swimmers and the swimmers to do laps while checking out the traffic below. The pool is smaller compared to other local grand hotels and only available to the hotel guests.

    Four Seasons Hotel

    The Four Seasons Hotel gorgeous infinity pool overlooks Victoria Harbor. Even cooler, the hotel pipes in underwater music, making the swim much more wonderful, or annoying, depending on your taste in music. The pool is open only to hotel guests.

    Dear Student of Star Middle School:

    As your student council president, I am writing to ask for your support to start the Count-Your-Steps walking program. Mr. Stewart Thomas, a parent of two students at Star Middle School, firstly came up with the idea. Mr. Thomas is a fan of walking and wants to encourage others to appreciate the activity. He shared his idea with our principal, Ms. Howser, who immediately agreed that we should try it.

    Ms. Howser contacted the other middle schools in the district, and all the teachers eagerly adopted the program. Now a team of Count-Your-Steps organizers made up of representatives from the middle schools, has established the program's goal: to increase awareness of the benefits of walking. Organizers want middle school students to accept this challenge and make walking one of their daily activities.

    The program has clear guidelines. Interested participants must only commit to recording the number of steps taken daily. Ms. Earley, the assistant principal, will give each of us a log for recording our steps and a pedometer, which is a small, digital tool used to count the steps of the person wearing it. All participants need to do each day is to wear the pedometer, walk as much as possible, and then record the number of steps in our logs. Clearly, the process is simple and convenient.

    While the benefits of walking are multiple, this challenge offers all who participate the opportunity to work together, achieve success, and make positive changes. Remember that the other schools in the district are signed up for the Count-Your-Steps too, and each one will try to take more steps than our school. I hope many will agree to this challenge and show everyone the Star Middle School Cougar Spirit.

    Please take into careful consideration this valuable and well-planned program, and then sign up today! In the words of Mr. Thomas, “Together we can enjoy the advantages of walking.”

    Sincerely,

    Cora Jeffries

    Scotland has long been characterized as a land of romance. It contains ruins of many ancient castles and abbeys，and there is an attractive beauty in its mountains，long deep valleys，and ribbon lakes. Each year those things attract a great number of tourists.

    Numerous islands line the coast. In the north are two large groups，the Orkney Islands and the Shetland Islands. Close to the west coast are the Inner and Outer Hebrides groups，and the islands of Arran and Bute.

    The land may be divided into three regions: the Highlands in the north，the Central Lowlands and the Southern Uplands.

    The Highlands are wild and picturesque(如画的). A long valley called Glenmore crosses the Highlands from southwest to northeast.

    In the south of the Highlands are the Grampian Mountains，highest in the British Isles. Ben Nevis，the highest peak，rises to 1，243 meters. Ben Lomond rises from the shore of Loch Lomond，Scotland's largest freshwater lake.

    The Central Lowlands run from southwest to northeast and the greatest length is nearly 145 kilometers. The soil here is fertile，and there are four coalfields underlying the area. In the east is Edinburgh，Scotland's historic capital city，and in the west is Glasgow. Almost 90 percent of Scotland's population live in the Lowlands.

    In the Southern Uplands，the hills are generally less than 600 meters high. Their rounded or flat tops are often capped with dark peat(泥炭). Along the slopes are plants like grass and heather(石南花).

    Ten years ago, I set out to examine luck. I wanted to know why some people were always in the right place at the right time, while others consistently experienced ill fortune. I placed advertisements in national newspapers asking for people who felt consistently lucky or unlucky. Hundreds of extraordinary men and women volunteered for my research. Over the years I have interviewed them, monitored their lives and had them take part in various experiments.

    In one of the experiments, I gave both lucky and unlucky people a newspaper, asking them to look through it and tell me how many photographs were inside. I had secretly placed a large message halfway through the newspaper, saying, "Tell the experimenter you have seen this and you will win $50." This message took up half of the page and was written in type that was more than two inches high. It was staring everyone in the face, but the unlucky people tended to miss it and the lucky people tended to spot it.

    Unlucky people are generally more nervous than lucky people, and this anxiety affects their ability to notice the unexpected. As a result, they miss opportunities because they are too focused on looking for something else. They go to gatherings concentrating on finding their perfect partners and miss opportunities to make good friends. They look through newspapers determined to find certain types of job advertisements and miss other types of jobs.

    Lucky people are more relaxed and open, and therefore see what is there rather than just what they are looking for. My research eventually showed that lucky people are skilled at noticing opportunities, make lucky decisions by listening to their intuition (直觉), are open to new experiences, and adopt a never-say-die attitude that transforms bad luck into good luck.