Flu easily spreads from one person to another. This is especially true to people who are weak. If you are weak, you are more likely to catch flu easily. Do you know how you can avoid flu?

    Keep in good health

    The best antidote (解药) to illness is good health. You can eat everything you want but make sure that your diet is healthy. The healthier you are, the better for you to avoid any type of illness around. Most doctors suggest plenty of fresh fruit juice and water in order that one can avoid flu.

    Stay away from people with flu

    If a member of the family or a friend has flu, stay away from them until they are well. Flu is very communicable and you can catch it by going with the person with flu. Wear a mask (面罩) and avoid using things that the person with flu is using.

    Exercise

    Exercising will make you stronger which means a stronger immune (免疫的) system too. Exercise often so that your body will keep healthy. It doesn't matter what kind of exercise.

    What is important is you are making your body stronger to prevent illness from attacking you.

    Be happy

    Happy people are healthy people. Their life is stress-free, so they are more likely to be safe from illness. If you are unhappy, which affects your immune system, you will easily get sick.

    Avoiding the flu is easy. Just boost (增强) your immune system and it will take care of the rest.

    Most people, when they travel to space, would like to stay in orbit (轨道) for a few days or more. And this stands to reason, if you're paying $ 20,000 for your trip to orbit! So in order for tourism to reach its full potential there's going to be a need for space hotels. What would a space hotel actually be like to visit? Hotels in orbit will offer the services you expect from a hotel—private rooms, meals, bars. But they'll also offer two unique experiences: impressive views—of Earth and space—and the endless entertainment of living in zero gravity—including sports and other activities that make use of this.

    The hotels themselves will vary greatly—from being quite simple in the early days to huge luxury (奢侈的) structures at a later date. It's actually surprising that as later as 1997, very few designs for space hotels were published. This is mainly because those who might be expected to design them haven't expected the costs to come down far enough to make them possible.

    Lots of people who've been to space have described vividly what it's like to live in zero gravity. There are obviously all sorts of possibilities for dancing, gymnastics, and zero-G sports. Luckily, you don't need to sleep much living in zero gravity, so you'll have plenty of time for relaxing by hanging out in a bar with a window looking down at the turning Earth below.

    Of course all good things have come to an end, unfortunately. And so after a few days you'll find yourself heading back to the earth. You'll be thinking how soon you can save up enough to get back up again-or maybe you should change jobs to get to work in an orbiting hotel!

    (CNN) — A 12 -year-old girl who had a feeling that she might be quite clever has taken a test and proved she was absolutely right.

    Lydia Sebastian achieved the top score of 162 on Mensa's Cattell III B paper, showing she has a higher IQ than well-known geniuses Albert Einstein and Stephen Hawking. The comparison doesn't sit well with the British student, who's currently in Year 8 at a selective girl's grammar school in Essex, England.

    "I don't think I can be compared to such great intellectuals as Albert Einstein and Stephen Hawking. They've achieved so much. I don't think it's right," Lydia told CNN.

To explain Lydia's mark's level, the top adult score in the Cattell III B test, which mainly tests verbal(语言) reasoning, is 161. A top 2% score — which allows entry to Mensa, the club for those with high IQs — would be 148 or over. Lydia scored 162, placing her in the top 1% of the population.

    Lydia's not quite sure what she wants to do when she leaves school, although she's leaning toward something "based on Maths, because it's one of my favorite subjects." "All I'm going to do is work as hard as I can, and see where that gets me," she said.

    The haunting paintings of Helene Schjerfbeck, on show in the final leg of a travelling tour that has already attracted thousands of visitors in Hamburg and the Hague, may come as a surprise to many. Few outside the Nordic(北欧的) world would recognize the works of this Finnish artist who died in 1946. More people should. The 120 works have at their core 20 self-portraits, half the number she painted in all. The first, dated 1880, is of a wide-eyed teenager eager to absorb everything. The last is a sighting of the artist's ghost-to-be.

    Prematurely gifted, Schjerfbeck was 11 when she entered the Finnish Art Society's drawing school. “The Wounded Warrior in the Snow”, a history painting, was bought by a private collector and won her a state travel grant when she was 17. Schjerfbeck studied in Paris, went on to Pont-Aven, Brittany, where she painted for a year, then to Tuscany, Cornwall and St Petersburg. During her 1887 visit to St Ives, Cornwall, Schjerfbeck painted “The Convalescent”. A child wrapped in a blanket sits supported up in a large wicker(柳条编制的) chair, toying with a sprig(小枝条). The picture won a bronze medal at the 1889 Paris World Fair and was bought by the Finnish Art Society. To a modern eye it seems almost sentimental(感伤的) and is made up for only by the somewhat astonished, sad expression on the child's face, which may have been inspired by Schjerfbeck's early experiences. At four, she fell down a flight of steps and never fully recovered.

    In 1890, Schjerfbeck settled in Finland. Teaching exhausted her, she did not like the works of other local painters, and she was further isolated when she took on the care of her mother. “If I allow myself the freedom to live an isolated life”, she wrote, “then it is because it has to be that way.” In 1902, Schjerfbeck and her mother settled in the small, industrial town of Hyvinkaa, 50 kilometres north of Helsinki. Isolation had one desired effect for it was there that Schjerfbeck became a modern painter. She produced still lives and landscapes but above all moody yet sharp portraits of her mother, local school girls, women workers in town.

    “I have always searched for the dense depths of the soul, which have not yet been discovered by humans themselves”, she wrote, “where everything is still unconscious -- there one can make the greatest discoveries.” She experimented with different kinds of underpainting, scraped and rubbed, made bright rosy red spots; doing whatever had to be done to capture the subconscious — her own and that of her models. In 1913, Schjerfbeck was rediscovered by an art dealer and journalist, Gosta Stenman. Once again she was a success.

    If you're a fan of smart technology, you may have had some sleepless nights lately. That's because Alexa, the artificial intelligence (AI) behind US company Amazon's Echo smart speakers, has been "letting out an unprompted (自发的),creepy (令人毛骨悚然的)cackle for no apparent reason, according to BBC News.

    Many social media users shared their stories of Alexa scaring them with the seemingly unprompted laugh.

    "Every time Alexa laughs, an angel dies," Tesla and SpaceX founder Elon Musk joked on social media.

    On March 7, Amazon released an update that fixed the problem, saying that the laugh was caused by Echo devices mistakenly thinking that users had said the command " Alexa, laugh".

    However, what should have been a funny story raised the ongoing topic of man versus machine.

    With the rise of artificial and robotic technology, "Digital machines started to demonstrate broad abilities in pattern recognition, complex communication, and other area that used to be particularly human," wrote Erik Brynjolfsson and Andrew McAfee in their book The Second Machine Age: Work, Progress, and Prosperity in a Time of Brilliant Technologies. They believe that AI will "do more and more, and our lives will get better".

    However, ever since the earliest days of AI there have been concerns that some day, software will take over the world, leaving the fate of humans unknown.

    "With artificial intelligence we are order the demon (魔鬼)Musk told students during a meeting at MIT in 2014. "If I had to guess at what our biggest existential threat is, it's probably that. So we need to be very careful

    Many scientists have shared the same concern. The late British physicist Stephen Hawking said at a technology conference in Portugal in November that "computers can. in theory, imitate human intelligence, and exceed it ••• AI could be the worst event in the history of our civilization."

    If creators are to safely control AL however, Hawking suggested that they "employ best practice and effective management".

    I am an optimist and I believe that we can create AI for the good of the world," he said at the conference. "We simply need to be aware of the dangers, identify them, employ the best possible practice and management, and prepare for its consequences well in advance."

Lovers often use flowers, chocolates, sweet gifts or grand declarations to express feelings deep in their hearts. But this year, you could let your love take off by traveling with that special someone on a romantic adventure. These are some romantic destinations which might bring new joy to your life and, most importantly, more fun and excitement to your relationship.

Stairs of the Turks, Sicily

Scala dei Turchi, or Stairs of the Turks, at Realmonte, southern Sicily, Italy. The Scala is formed by mud, a sedimentary rock(沉积岩) with a characteristic white color and is a popular tourist attraction and place to sun bath. In the film Malèna, the hero, 12-year-old Renato, always stare at the sunset here with his friends.

Somerset House in London

Located in central London, Somerset House is a popular filming location with its exterior featuring in several big budget Hollywood films. In the winter, its central courtyard is turned into an open-air playground for skating, as seen during the well-received film Love Actually.

Pokhara, Nepal

Pokhara is considered the tourism capital of Nepal. With two major hilltops as viewpoints to see the city and surrounding view, the city has recently added a bungee jumping site (the second in Nepal): Water Touch Bungee Jumping. Visitors also come here for adventure activities such as paragliding and skydiving. In the film Up in the Wind starring Ni Ni and Jing Boran, two young people climb up to the mountaintop and wait for the strong wind to carry them for paragliding. It becomes a moment of spiritual uplift.

Otaru, Hokkaido, Japan

A canal decorated with Victorian-style street lamps runs through Otaru. The city attracts many Japanese tourists as well as Russian visitors. Otaru is well known for its beer, fresh sushi and handicrafts like studio glass and musical boxes. At the poster of Japanese film Love Letter, Hiroko Watanabe stands among the snowy town and honors her dead lover.