Good health is the most valuable thing a person can have but one cannot take good health for granted. It is important to remember that the body needs proper care in order to be healthy. There are three things that a person can do to help stay in good shape, eat right food, get enough sleep, and exercise regularly.

    Proper nutrition is important for good health. Your body cannot work well unless it receives the proper kind "fuel". Don't eat too much food with lots of sugar and fat, eat plenty of foods high in protein, like meat, fish, eggs and nuts. Vegetables and fruits are very important because they provide necessary vitamins and minerals. However, don't overeat It is not helpful to be overweight

    Getting the proper amount of sleep is also important. If you don't get enough sleep, you feel tired and easily get angry. You have no energy. Over a long period of time a little amount of sleep may even result in a change of personality(人的个性).Be sure to allow yourself from seven to nine hours of sleep each. If you do, your body will feel strong and refreshed, and your mind will be sharp.

    Finally, get plenty of exercise. Exercise firms the body, strengthens the muscles, and prevents you from gaining weight. It also improves your heart and lungs. If you follow a regular exercise program, you will probably increase your life-span(寿命). Any kind of exercise is good. Most sports are excellent for keeping the body in good shapes: basketball, swimming, bicycling, running and so on. Sports are not only good for your body, but they are enjoyable and interesting, too.

    If everybody were to eat the right foods, get plenty of sleep and exercise regularly, the world would be a happier and healthier place. We would all live to be much older and wiser.

    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 automatic, 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 triggered (引发) 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 have started to demonstrate (展示) broad abilities in pattern recognition, complex communication, and other fields that used to only belong to 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 summoning (召唤) the demon ," 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 AI, 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."

    Living next to the Spellmans, our new neighbors, almost drove my mother crazy. If shewasn't shaming them for not attending church, or complaining to her sister Jackie about theway the Spellman girls dressed, then she was shoeing the Spellman's dogs out of our yard or filing noise complaints with the police, My mother had never been so busy.All she ever spoke of any more were the Spellmans and their wrongdoings.

    One Sunday afternoon after church service, my mother was driving old Ms Parker home to her house on the hill when we got a flat tire. As far as changing the tire, let's just say that we were at the mercy of the good Lord. Since old Ms. Parker lived so far up that hill, not a lot of traffic drove by us. It had been about fifteen minutes since the last car passed when we heard the rattling and puttering of an old pickup truck as it pulled over to assist us.

    The Spellman boys ran up on our car like a NASCAR pit crew. Before my mother could even protest, they had taken the tire off. "Her spare is flat," said the middle one to the big one. " Give her ours” replied the big one, barely acknowledging the sacrifice. My mother was stunned. "I don, t know what to say, "she stammered. The big one said, "Well, the Lord said love your neighbor, and we are neighbors, right?

    The next day when the Spellman's dogs went through my mother's flower garden, she put out a bowl of water for them. When she saw the Spellman girls walking out with nothing but a halter on, she lectured them about being upright ladies and offered them sweaters. And when she heard the Spellman's music through our walls, she tried to dance a little bit. She even invited the Spellmans to be part of the good neighbors committee. Now the neighborhood was a better place.

    March 3 marks World Hearing Day. This year's theme is “Check your hearing!” Many experts and health organizations, including those who pay attention to the hearing-impaired (听力障碍), are working to help people realize the importance of protecting their hearing and avoid hearing loss.

    When we talk about music, what kind of feelings does it bring? Excitement… and relaxation. But what if the music lasts for hours?

    We interviewed a group of musicians based in Beijing during the weekend. They all said that hours of exposure to loud music can cause discomfort. One added that band members like to play at maximum volume (音量) and forget the harm that loud music can cause. The same thing not only occurs to musicians. It's also not rare for daily users since listening to loud music on loud sound equipment has become a part of modem life. According to the WHO, the practice has put more than a billion people around the world, aged 12-35, at risk of losing their hearing.

    We also interviewed some headphone users in the street, and most of them said that they are not heavy users but admitted they use headphones for hours on the subway and in the office or home. It's easy for these people to gradually increase the volume without awareness, especially in a noisy environment. Often, headphone users fail to realize they're listening to audio at unsafe levels until serious hearing problems suddenly occur.

    There are many reasons for hearing loss, including loud acoustic (听觉的) sources, drug abuse, and diseases. Experts suggest frequent medical checks and prevention measures.

    Whether congenital (先天的) or acquired, loss of hearing is usually irreversible. “Once the hearing loss occurs, it's already too late to be changed back to what it was before,” said Yang Shiming, expert of the Chinese PLA General Hospital. “Early prevention, early identification and early treatment. If everyone could do these things, hearing loss and its harm could be kept to a minimum,” Yang said. Of course, this applies to every one of us.

    Two Chinese-themed films -- "Go Back to China" and "Baby" -- will be screened at the 20th annual Newport Beach Film Festival (NBFF) this week.

    The film "Go Back to China," written and directed by Chinese American filmmaker Emily Ting, tells the story of fashionista, Sasha Li, a spoiled rich girl living in the United States, who burns through her trust fund (信托基金) and is forced to return to China to work for the family toy business. The second Chinese film, "Baby" was directed by Liu Jie and produced by Shan Gao, and will be on its first show at China Onscreen Biennial. In the film, a Chinese girl, Jiang Meng, who is a lowly cleaner working in a children's hospital, swears to save a baby born with the same congenital defects(先天性缺陷) she was born with, whose father has abandoned it as too expensive to treat.

    Running from April 25 to May 2, the Newport Beach Film Festival boasts over 60 narrative films and over 200 shorts in its line-up this year. These films and shorts are carefully selected by many countries which includes China, Chile, Ireland, South Korea, Europe, Japan, South America and Australia. Film fans are invited to attend the Pacific Rim Showcase Party this Wednesday, honoring the best in Chinese, Asian and Australian filmmaking.

    NBFF Executive Director, Gregg Schwenk, said of the festival," This year, the theme is the Power of Ideas. We've always focused on diverse, strong filmmaking, and we're most proud of how we've been embraced, not just by our audience, but by the filmmaking community."

    If you make a list of the top ten most challenging jobs in the world, chances are that being a teacher will not make the cut. Let's think about their complex task millions of educators face each day as they try to teach a group of often unfriendly, disorderly kids into intelligent, well-rounded individuals. That surely has to be the toughest job in the world, especially taking into consideration that there is no promotion waiting for them even if they are wildly successful!

    What if these all-important individuals that we often take for granted disappear from our lives? That was what Project Ed and Participant Media's teaching campaign asked filmmakers of all ages to envision for their recently-held contest.

    Their short films were called "A World without Teachers", whose intention was to inspire more young people to become teachers. However, the 62 amazing video submissions (提交物) also serve as a reminder of how terrible things would be if we didn't have these selfless individuals guiding us through life. What was interesting is that even the youngest contestants didn't accept the idea that there's no person to tell them what to do.

    High-school student Savannah Wakefield considered if art as we know today would have been different without teachers. Would C. Monet have discovered his talent for impressionism?

    Miles Horst won the 1,000-dollar prize for the best adult submission, lie pictures n world where teachers are replaced by a "brain box". Youth group winner Marina Barham's video describes a fact we all know but often forget. Teachers don't just teach; they inspire—something that no electronic device, no matter how smart, can do!

    So the next time you think your teacher is being "troublesome" for trying to channel you in the right direction, imagine a life without him/her.