Body language is one of the most powerful means of communication, often even more powerful than spoken language. It is said that our body movements communicate about 50 percent of what we really mean while words only express 7 percent. So, while your mouth is closed, your body is just saying.

    Arms. How you hold your arms shows how open and receptive you are to people you meet. If you keep your arms to the sides of your body or behind your back, this suggests you are not afraid of taking on whatever comes your way. Outgoing people generally use their arms with big movements, while quieter people keep them close to their bodies. If someone upsets you, just cross your arms to show you're unhappy!

    Head. When you want to appear confident, keep your head level. If you are a monitor in class, you can also take on this position when you want your words to be taken seriously. However, to be friendly in listening or speaking, you must move your head a little.

    Legs. Your legs tend to move around a lot more than normal when you are nervous or telling lies. If you are at interviews, try to keep them still!

    Posture (姿势). A good posture makes you feel better about yourself. If you are feeling down, you normally don't sit straight, with your shoulders inwards. This makes breathing more difficult, which can make you feel nervous or uncomfortable.

    Mouth. When you are thinking, you often purse(噘嘴) your lips. You might also use this position to hold back an angry comment you don't wish to show. However, it will probably still be noticed, and people will know you're not pleased.

    Face. When you lie, you might put on a false face. But that expression would crack briefly, allowing displays of true emotions such as happiness, sadness, disgust (厌恶) and fear to come through.

    If you're planning to go on a diet o1 if you suffer from serious conditions like diabetes( 糖尿病), knowing exactly what and how much you're eating is essential. In this day and age, we have calorie and nutritional calculators even on our smartphones, but they act only as guides, whereas Panasonic's revolutionary new device, CaloRieco, actually analyzes the food on your plate and provides accurate in formation about in just a few seconds.

    You've probably used calorie calculators before,and you know that they only offer general information. For example, a calculator will tell you the average number of calories in a hamburger, but it can't tell you exactly how many calories are in the hamburger. The same goes for nutrients like protein or fats. And this is what makes the new CaloRieco so special.

    Displayed at a recent tech show, CaloRieco is a high-tech device that uses light reflection technology to determine the nutritional values of almost any food and also provide accurate calorie estimates.All you have to do is put your plate in the box-shaped device and wait between 10 and 20 seconds for it tc analyze all the food on there.

    Once it's done analyzing the various ingredients(原料)in your meal, CaloRieco displays the number of calories, as well as the nutritional content on an LED display, According to Panasonic, the device is able to recognize the vast majority of foods, except soups and very dark dishes.

    CaloRieco can also connect to your smartphone via an app, and send all the data about analyzed foods to your handheld, so you car access it whenever you need.

    Panasonic said that its outstanding invention is aimed at dieters and diabetes sufferers, both of which make up a large market.Unfortunately,you'llhave to wait a bit longer to your hands on your very own CaloRieco, as the device presented a the show is just a prototype(样品) which needs to be improved. It 's scheduled to hit the market sometime in the next few years, but the price remains unknown.

    Many wealthy and well­traveled people want a completely new experience, but they don't necessarily want to give up luxury (奢华的) accommodations and service. The following vacations could be best choices.

    Cruise down the Amazon River

    Aqua Expeditions takes up to 32 passengers at a time on guided journeys of three, four, or seven days down the Amazon River. Those adventurers see forests and waterfalls, visit local fish markets, and take canoe trips. They also take in wildlife such as capuchin monkeys and river dolphins.

    Go Glamping in Montana

The Resort at Paws Up located on a cattle ranch(牧场) is a standout in the type. The ranch rents homes with up to four bedrooms, but it's the luxury tents that offer closer communion with the outdoors. Tents are arranged into camps, each of which has a private chef and butler, the latter of whom helps build campfires and arrange daytime activities. Guests can participate in a cattle drive, go clay shooting, take a hot air balloon trip, or ride horses.

    Climb inside a Volcano in Iceland

    Iceland is famous for its volcanoes and has plenty of luxury hotel options. Thrill­seekers can actually go down into the dormant (休眠的), 700­foot­deep Thrihnukagigur, by using an open elevator. Take a helicopter if you want to skip the 2­mile hike to the volcano, and arrange a private tour to avoid crowds. And visitors traveling there can enjoy the luxury hotel such as the ION Luxury Adventure Hotel and the Hotel Rangá.

    I had a lot of teachers that I loved. However, the teacher that I remember most was Mrs Green from Marianna, Florida. She was my 5th grade teacher. Since I was a new student, not only in her class, but at the school, she made my time there much more pleasant. I immediately began to like her. She was really funny and I knew that she liked me. She made learning fun. I remember one day for Christmas holidays, she taught us how to make ornaments (装饰物) from eggs. My parents still have some of the ornaments I made.

    She made me leader for many group projects and that made me feel special. I think that would make any child feel special, especially when a child is in a new place with no friends. She made me want to be like that. Not to pick a "favourite" student, but to make every student feel that they are special. That year, I received the Presidential Academic Award (美国总统学术奖). I was really proud and so were my parents.

    Looking back at it, I think the reason why I did so well was that I felt important. Students do better when they feel like they are important or loved. Mrs Green always gets to know her students and forms personal relationships with them, which I will try to do some day. I just hope that there will be a student who finds me to their favourite teacher as I found her to be mine.

    If you walk through the doors of one of the Smithsonian Institution's museums in Washington, D.C., you may be greeted by an unusual guide. A Japanese tech company recently sent 25 humanoid robots to the Smithsonian. All of them are named Pepper.

    Each Pepper stands 4 feet tall and has a computer screen attached to its body. Built by SoftBank Robotics, the robots are programmed to share information about the museum in which they are based.

    "Pepper is basically an experiment," Goslins, director of the Smithsonian's Arts and Industries Museum, said. "The idea is to explore and see how a robot performs in this kind of environment."

    Museum visitors communicating with Pepper. The robot can tell stories and answer basic questions. People even take pictures and dance with it.

    "The robot draws big crowds," said Allison Peck, director of marketing at the Hirshhorn. "People just love Pepper."

    According to the Smithsonian Institution's website: "Pepper gives our museum workers a new way to reach and serve visitors." For example, Pepper teaches Swahili words to visitors of the "World on the Horizon" exhibit at the Smithsonian's National Museum of African Art.

    Pepper also has the special ability to draw guests to less-visited areas of the Smithsonian's museum. When Pepper is placed in a spot, crowds are attracted to that place.

    When not educating museum visitors, Pepper stays in the Smithsonian offices, getting charged and programmed. After being charged, Pepper can run for about 8 hours at a time.

    Pepper plays an important role, but the robot "is not meant to take away human jobs at the museum," Goslins explained. "It is meant to give our visitors a more enjoyable experience while they are here with us."

    Microsoft announced this week that its facial-recognition system is now more accurate in identifying people of color, touting (吹嘘)its progress at tackling one of the technology's biggest biases (偏见).

    But critics, citing Microsoft's work with Immigration and Customs Enforcement, quickly seized on how that improved technology might be used. The agency contracts with Microsoft for cloud-computing tools that the tech giant says is largely limited to office work but can also include face recognition.

    Columbia University professor Alondra Nelson tweeted, "We must stop confusing 'inclusion' in more 'diverse' surveillance (监管)systems with justice and equality."

    Facial-recognition systems more often misidentify people of color because of a long-running data problem: The massive sets of facial images they train on skew heavily toward white men. A Massachusetts Institute of Technology study this year of the face-recognition systems designed by Microsoft, IBM and the China-based Face++ found that facial-recognition systems consistently giving the wrong gender for famous women of color including Oprah Winfrey, Serena Williams, Michelle Obama and Shirley Chisholm, the first black female member of Congress.

    The companies have responded in recent months by pouring many more photos into the mix, hoping to train the systems to better tell the differences among more than just white faces. IBM said Wednesday it used 1 million facial images, taken from the photo-sharing site Flickr, to build the "world's largest facial data-set" which it will release publicly for other companies to use.

    IBM and Microsoft say that allowed its systems to recognize gender and skin tone with much more precision. Microsoft said its improved system reduced the error rates for darker-skinned men and women by "up to 20 times," and reduced error rates for all women by nine times.

    Those improvements were heralded(宣布)by some for taking aim at the prejudices in a rapidly spreading technology, including potentially reducing the kinds of false positives that could lead police officers misidentify a criminal suspect.

    But others suggested that the technology's increasing accuracy could also make it more marketable. The system should be accurate, "but that's just the beginning, not the end, of their ethical obligation," said David Robinson, managing director of the think tank Upturn.

    At the center of that debate is Microsoft, whose multimillion-dollar contracts with ICE came under fire amid the agency's separation of migrant parents and children at the Mexican border.

    In an open letter to Microsoft chief executive Satya Nadella urging the company to cancel that contract, Microsoft workers pointed to a company blog post in January that said Azure Government would help ICE "accelerate recognition and identification." "We believe that Microsoft must take an ethical stand, and put children and families above profits," the letter said.

    A Microsoft spokesman, pointing to a statement last week from Nadella, said the company's "current cloud engagement" with ICE supports relatively anodyne(温和的)office work such as "mail, calendar, massaging and document management workloads." The company said in a statement that its facial-recognition improvements are "part of our going work to address the industry-wide and societal issues on bias."

    Criticism of face recognition will probably expand as the technology finds its way into more arenas, including airports, stores and schools. The Orlando police department said this week that it would not renew its use of Amazon. com's Rekognition system.

    Companies "have to acknowledge their moral involvement in the downstream use of their technology,"

    Robinson said. "The impulse is that they're going to put a product out there and wash their hands of the consequences. That's unacceptable."