Fear and its companion pain are two of the most useful things that man and animals possess if they are used. If fire didn't hurt when it burned, children would play with it until their hands were burned away. Similarly, if pain existed but fear didn't, a child could burn itself again and again because fear would not warn it to keep away from the fire that had burnt it before. A really fearless soldier--and some do exist--is not a good soldier because he is soon killed; and a dead soldier is of no use to his army. Fear and pain are therefore two guards without which man and animals might soon die out.

    In our first sentence we suggested that fear ought to be properly used. If, for example, you never go out of your house because of the danger of being knocked down and killed in the street by a car, you are letting fear rule you too much. The important thing is not to let fear rule you, but instead, to use fear as your servant and guide. Fear will warn you of dangers; then you have to decide what action to take.

    In many cases, you can take quick and successful action to avoid the danger. For example, you see a car coming straight towards you; fear warns you, you jump out of the way, and all is well.

    In some cases, however, you decide that there is nothing that you can do to avoid the danger. For example, you cannot prevent an airplane crashing into your house, and you may not want to go and live in a desert where there are no airplanes. In this case, fear has given you its warning, you have examined it and decided on your course of action, so fear of the particular danger is no longer of any use to you, and you have to try to overcome it.

    My students entered the art room with their usual eagerness to see what they would be learning in today's class. Little did they know they were going to be students for a new teaching method that is spreading the nation.

    I often use videos as previews and supplements (补充) to our art lessons providing students with a variety of artists showing their skills in real-life situations outside the classroom. Finding a new painting technique called glue batik(胶水蜡染),  I thought of something new I hadn't tried before!  How awesome would it be to learn a new technique together with artists? The lesson was planned, presented to the students without any introduction or set objectives. I also asked the students to watch and pause the video as often as they needed to.

    They watched as the artist explained and showed her skills, taking notes on her steps and results. After the video, they shared what they felt the artist's objectives were, her end result using art vocabulary as well as the steps they would need to know to present their own examples. Then they began creating their works using the glue batik technique.

    Surfing the Internet a couple of weeks later, I found that the teaching method I used sounded very familiar to a new movement in education called flipped teaching, which was developed by Jonathan Bergmann. He asked his students to watch video lectures at home and do exercises (homework) in class under supervision (监督). He found that grades went up and he also found time for other types of activities, which Bergmann states are more important than the videos.

    Back to my art class, the students were learning to get ideas, make predictions, and explain reasoning to their classmates. Together they compared, asked questions and made discoveries as they presented the technique.

    Patients with light or moderate depression can be successfully treated by swimming with dolphins, researchers said on Saturday.

    The study was carried out in Honduras, including patients who were thought by the doctors with light of moderate depression coming from the United States and Honduras.

    For two weeks, half of the group swam and snorkeled (潜泳) with dolphins for an hour a day. At the same time the other half group carried out the same type of water activities, but with the absence of dolphins. Researchers want to find out the influence of water and the natural setting.

    All the study volunteers didn't continue to take any drugs or psychotherapy ( 心理治疗) at least for weeks before the start of the study and did not take any drugs during the study, said the researchers from the division of clinical Psychiatry at t e the University of Leicester Medical School.

    By the end of the study, those people who swam with the dolphins had a greater average reduction in their depressive symptoms than those who did not.

    The researchers noted that the study supports the theory of biophilia, which thinks that human health and well-being depends partly on the human connection with the natural world. The findings appeared in the issue of the British Medical Journal.

    Coming from the Greek, biophilia means “love of life”, and it has been developed by biologists to reflect the humans' natural tendency to connect with nature and animals, leading to interactions and positive emotions that result in psychological treatment.

    An 114 kilograms mother, Cacia Griggs, was ashamed into losing weight after crushing her daughter, four-year-old Isabelle's bed while reading her a bedtime story.

    Just one year later she has lost 50 kilograms, dropped to a size 10, and even was employed by her dream company.

    One night, having asked her 29-year-old husband to carry Isabelle up to bed because she couldn't fit through the stair gate, Cacia followed them upstairs and lay down on the edge of the bed with her daughter to read her a story.

    “I heard a loud snap(噼啪声),” she said. “I'd broken the entire side beam of her bed because I was overweight. I was upset.”

    On her first family holiday with Chris and Isabelle in Turkey last year, Cacia had a similar moment when she couldn't fit the plane seatbelt around her.

    Cacia began the Cambridge Weight Plan in June 2011, changing her high-calorie diet into soups, shakes and bars. In August this year, Cacia reached her goal weight and dropped from a size 24 to a size 10.

    “My weight began to drop off,” she said. “In no time at all I was wearing smaller clothes and was over the moon the first time I brought a size 16, I couldn't believe it fitted.”

    Cacia says the best thing about losing the weight is being able to lie with her daughter again on her bed instead of sitting on the floor next to her.

    Last week, Vodafone started a test of the UK's first full 5G service, available for use by businesses in Salford. It is part of its plan to trial the technology in seven UK cities. But what can we expect from the next generation of mobile technology?

    One thing we will see in the preparation for the test is lots of tricks with the new tech. Earlier this year, operators paid almost £ 1.4 billion for the 5G wavelengths, and to compensate for that cash, they will need to catch the eye of consumers. In September, Vodafone used its bit of the range to display the UK's first hologram (全息) call. The Manchester City captain Steph Houghton appeared as a hologram in Newbury. It isn't all holograms, however: 5G will offer faster internet access, with Ofcom (英国通讯管理局) suggesting that video that takes a minute to download on 4G will be available in just a second.

    The wider application is to support connected equipment on the "internet of things" -not just the internet-enabled fridge that can reorder your milk for you, but the network that will enable driverless cars and delivery drones (无人机) to communicate with each other.

    Prof William Webb has warned that the technology could be a case of the emperor's new clothes. Much of the speed increase, he claims, could have been achieved by putting more money in the 4G network, rather than a new technology.  Other different voices have suggested that a focus on rolling out wider rural broadband access and addressing current network coverage would be more beneficial to the UK as a whole.

    Obviously, 5G will also bring a cost to consumers. It requires a handset for both 5G and 4G, and the first 5G-enabled smart phones are expected in the coming year. With the slow pace of network rollout so far, it is likely that consumers will end up upgrading to a new 5 G phone well before 5 G becomes widely available in the next couple of years.

    Desiree was only four when she lost her Dad. Instead of gradually adjusting to his death, Desiree refused to accept it and even wanted to die so as to be with her father. Concerned about her daughter, Rhonda turned to her mother, Trish Moore, for help.

    November 8 of 1993 would have been Ken's 29th birthday. So Trish advised Desiree to send her father a card. Desiree's eyes lit up as she dictated a letter, "Happy birthday, Daddy. I love you and miss you. I hope you get this and can write to me on my birthday." Trish wrote the message and their address on a small piece of paper and tied it to the end of the string on a balloon with a drawing of the Little Mermaid (美人鱼). Finally, Desiree released the balloon.

    On November 12 in eastern Canada, Wade MacKinnon was duck-hunting. Suddenly something in the bushes caught his eye. Curious, he approached to find a silver balloon. The letter finished with a mailing address in Live Oak, California. The balloon traveled 3,000 miles. What a coincidence! A Little Mermaid balloon landed at Mermaid Lake. To help Desiree, the MacKinnons wrote her a letter with a birthday card and an adaptation of The Little mermaid.

    The MacKinnons' package arrived later on Desiree's birthday. The letter read, "Happy birthday from your daddy. You must be wondering who we are. Well, it all started... There are no stores in heaven, so your daddy picked us to do the shopping. We know your daddy loves you very much and wants you to be happy and not sad. Lots of love, the MacKinnons."

    Tears in eyes, Desiree said, "I knew Daddy would find a way not to forget me." Next, Trish began to read the Little Mermaid to her, in which the mermaid was finally carried away by angels. "The mermaid goes to heaven just like Daddy!" Desiree said with delight. She understood then her father was with her always.