There are some injuries that are common to all types of extreme sports. The following are some of the important things to do to prevent extreme sports injuries. {#blank#}1{#/blank#} But they can definitely minimize the risk of injuries.

    Warm up.

    {#blank#}2{#/blank#} They include a combination of cardiovascular(心脏血管的)exercises, strength drills and stretching. Cardiovascular exercises increase body temperature, heart rate and blood circulation, which is required for further movement of the body. Strength drills increase the stamina of the body, while stretching warms up the muscles preparing them for sudden forceful movements. {#blank#}3{#/blank#} It also plays an important role in boosting the team spirit for a team sport. A warm-up session should last for at least 20 minutes and it can extend up to half an hour.

    Avoid overworking.

    There are some people who do not exercise their body for the sport on a regular basis and perform a week's task in a day or two. {#blank#}4{#/blank#} They do not realize the effect of overworking during the performance and keep doing it until they feel extremely tired. Apart from the actual sport, one should also avoid overdoing the warm-up exercises before the activity.

    {#blank#}5{#/blank#}

    Just as warming up is essential before any rigorous(充满活力的) physical activity, cooling down the body after playing a rigorous sport is also a significant part of physical conditioning. When you are done with your sports session, you can conclude with some walking, jogging or light running. Slight stretching exercises, focusing on specific muscles, will also be useful for cooling down the body.

A. Cool yourself down.

B. Look for a coach to train you.

C. These people are likely to suffer from extreme sport injuries.

D. However, there are no perfect methods which can assure you 100% safety.

E. Along with physical preparation, warming up prepares you mentally to begin a sport.

F. You should also be careful about your clothing selection for warmth and protection.

G. Warm-up exercises are very important before you begin any sports practice.

    More and more comment(评论) sections are being shut down online.

    Autumn Phillips had had enough. On August 19, the executive editor of the Quad-City Times in Iowa, and Illinois, US visited her website, qutimes. com, and saw a story about a man who had been shot to death. When she got to the readers' comments section at the end, she was shocked by what she saw. Below the story was a growing string of comments—a racist remark about democratic( 民主的) voters, a negative comment about police...So Phillips decided to do something she had been thinking about for a long time: she shut down the comment section.

    Phillips was not alone in making such a move. Last week, NPR announced it too was closing its online comments section. The decisions don't mean that the news outlets are no longer interested in what their audiences are thinking. Both stressed their eagerness to hear from readers and listeners on social networks. But both agreed that comments had deviated from their original intention. And so they had.

    In the early days of digital journalism, comments were seen as a key part of the new media, a wonderful opportunity for strengthening the dialogue between news producers and their audiences. It was a welcome change, given that for long many news organizations were far too separated from their readers. Much more back and forth conversation seemed like healthy and welcome evolutions. Sadly, that's not the way things turned out. Rather than a place for exchanging ideas, comments sections became the home of ugly name-calling, racism and anti-women language. Besides their poisonous quality, comments seem out of place today.

    “Since we made the announcement, I've received an outpouring of responses from our readers,”she says. “I've heard from parents whose children were hurt by our online comments. I've heard from people who said they wouldn't send in letters to the editor because they were attacked so fiercely by comments, and it wasn't worth it.”

    A new “smart bin” could spell the end of environment - conscious families spending hours sorting tins, cartons, bottles, and cardboard for recycling. The invention, which automatically sorts rubbish into recycling categories, is being trialed in Poland and is set to go on sale in the UK within a few years.

    The bin, designed by start - up company Bin. E, recognizes different types of waste via a system positioned inside the bin which uses sensors, image recognition and artificial intelligence. Once waste is placed inside, the camera and sensors identify its type and place it in one of the smaller bins. Then it compresses (压缩) the waste so it occupies less space.

    News of the launch showed that more than a million households are being forced to accept bin collections every three or four weeks, because councils are trying to force them to recycle more. Data collected by The Telegraph has showed at least 18 areas have moved or will shortly be moving to three - weekly rubbish collections, while a further three have adopted or are trialing four - weekly collections. While reducing general bin collections, councils are increasing the frequency of recycling collections in a bid to change people's behaviour. It is thought that the bin could be stocked by department stores such as John Lewis, which said it is introducing new hi - tech recycling bins to satisfy increasing customer appetite for them. Matt Thomas, a utility (家用设施) seller at John Lewis, said, “We've recently seen a jump in specialist bins sales, with a 25 percent increase in the last few months alone. We have noticed our customers are becoming more and more sustainability focused, choosing dual compartment (双格) recycling bins that make it far easier to recycle different types of waste. In response to this demand, we are really excited to introduce a new voice and sensor activated smart bin this autumn / winter season — designed to use new technology to make recycling more efficient and functional for the everyday home.”

    Since 2013,Torobo, a robotic are designed to test the limits of artificial intelligence, has had one ambition—to be admitted to the University of Tokyo, one of Asia's top-ranked educational institutions. Although equipped with an extensive database of textbooks and other teaching materials, Torobo has repeatedly failed to obtain the university's required minimum 80% score in the National Center Test, a yearly standardized entrance examination adopted by Japanese universities. This year was no exception.

    In early November, Torobo, along with millions of Japanese high school students, took a mock(模拟的)exam to prepare for the all-important standardized test.

    Torobo's total score of 525 out of 950, which was higher than the national average, was enough for it to get admitted to many other influential Japanese universities.

    However, its standard score of 57.1%, though 14 points higher than in 2015, still fell short of the minimum required for the University of Tokyo.

    A closer analysis of the results showed that Torobo was able to draw from its database to solve knowledge-based questions and ones involving complex mathematical calculations, but it had a hard time thinking independently, failing to comprehend multiple sentences and phrases to arrive at the logical conclusions. This weakness was reflected in its shabby English scores.

    Fortunately, the robot's creators have decided to free Torobo from its four-year sufferings. Noriko Arai, professor of the University of Tokyo who heads the team, says, “From the present results, we are able to evaluate the possibilities and limits of artificial intelligence. From now on, we will grow its abilities in the fields where it is doing well and aim to improve them to levels that can be applied in industry.” So while Torobo will never graduate from the University of Tokyo, it can still look forward to a bright future!

    New study shows that when teachers participate in a training program focused on prosocial (亲社会的) classroom behavior, their students are better able to control their emotions, and that children who can regulate emotions are more likely to be academically successful.

    For the study, which appears in Prevention Science, researchers looked at more than 100 teachers and 1,817 students from kindergarten to third grade to see if teachers could support students' emotional and behavioral growth through the Incredible Years Teacher Classroom Management (IYTCM) program.

    The program uses videos and training sessions, along with role-playing and coaching, to help teachers learn management skills such as using behavior-specific praise, building positive relationships with students, and considering how to reduce poor behavior. Teachers in the training group increased interactions with students by 64 percent compared with 53 percent for teachers in the control group without the training.

    "Emotional regulation is the ability to recognize what behavior is appropriate in the present situation," says Wendy Reinke, professor in the College of Education at the University of Missouri. "For example, a student might have difficulty controlling the feeling of anger if he or she becomes annoyed with another student. But under this program, the teacher encourages them to move to a different spot in the classroom, effectively teaching them that sometimes stepping away and taking a break is a good way to calm down and manage8ha8feeling."

    After one school year of using the program in classrooms, students improved their social ability and ability to regulate their emotions. These improvements resulted in an increase in the tests for students in Incredible Years classrooms vs. students in control classrooms. And this classroom management approach can help reduce the risk for struggling learners early on, which could help prevent more accumulative support needs in a child's future.

Recently, the box office darling in China, titled A Little Red Flower, {#blank#}1{#/blank#} （become） a hit.It is a love story about a young couple{#blank#}2{#/blank#} （suffer） from cancer and the stress it puts on their families. The movie star Jackson Yee, {#blank#}3{#/blank#} performance in Better Days（2019）was thought highly of, has impressed countless viewers.

Han Yan, the director and scriptwriter of A Little Red Flower, says that his new film is intended{#blank#}4{#/blank#} the audience who need a spiritual guide or support, "I don't want to{#blank#}5{#/blank#} （simple） show how much pain people are in after they fall ill or how they toss and turn in bed, unable to fall asleep. Movies, should be able to give viewers psychological consolation（安慰）, "he says.

By showing the steely{#blank#}6{#/blank#} （determine） of cancer patients and their families in facing one of life's biggest{#blank#}7{#/blank#} （challenge）, Han hopes viewers who comparatively have little{#blank#}8{#/blank#} （worry） about can realize that they should stop complaining and be grateful for being alive.

"I have watched many movies about the pursuit of dreams, but as I get older I feel the{#blank#}9{#/blank#} （difficult） thing in the world is to stay alive, " he says "Every day{#blank#}10{#/blank#} extreme version of staying alive. "