A news release (释放，发布）is a tool of communication，through which information is passed to even the farthest end of the world.It keeps us well informed of the happenings of the world which would otherwise remain unknown.

    When writing a news release，keep in mind that the media receive hundreds of releases every day.Try to follow these guidelines：Keep it short and professional.Come up with a catchy headline that will grasp someone's attention.Sometimes the title will take more time to come up with than writing the release.That's okay－the headline could be critical for getting an event covered!

    Cover the 5 W's in your first paragraph.Those are who you are; what you are doing；where，when you are doing；why you are doing it，which help us understand the details about the event.Besides，any opinions in the news release should be put in quotations from your designated spokesperson.Include things that the media finds newsworthy，which is the most essential.

    Make the time on your news release at least half an hour later than the time you have told activists to show up at an event.This will ensure that activists are prepared and in place by the time the media arrive.

    Choose a spokesperson for the event who can be quoted in the release and will be available for calls at that number the day before the event.

    Have someone proof the release for spelling，grammar and content (determine whether what you are trying to relay is clear and right)．Sometimes the person who writes the release may not notice mistakes that a fresh pair of eyes will catch.

    Accuracy is the last but not least important in terms of your content and the location and time that you tell the media.If you do make a mistake，it is critical that you call and notify the media of the correction.

UK schools try Chinese math

    It's well known that Chinese students often outperform their peers from other countries in math contests. This is why the UK is going to try out Chinese math books and exercise papers in many of its schools.

    According to China Daily, international publisher Collins Learning signed an agreement with Shanghai Century Publishing Group on March 14 to publish translated copies of Shanghai's primary school math books. Under the agreement, Collins will print a series of 36 books, named Real Shanghai Mathematics. The series includes math textbooks, supplementary(补充性的) textbooks and teacher's textbooks. Some primary schools in the UK will use the books for first to sixth graders in September.

    The aim of this is to improve UK students performance in math by learning from the way Chinese schools teach their students the subject.

    Chinese schools, represented by those in Shanghai, have marked high in math scores in all three rounds of the Program for International Student Assessment(PISA) since 2009. However, the UK scored far less, according to The Guardian Still, some people worry that textbooks alone cannot solve the UK's problem with math, as the fundamentals of the education systems are so different.

    One key difference is that Chinese schools focus on students as a whole, while those in the UK value individual performance. In Chinese schools, students are taught together as a class, with students all moving through their lessons one step at a time. However, in the UK, students in the same class are often given different work to do depending on their progress.

    There are also huge differences in teacher training and deployment. Primary school math teachers in Shanghai teach only math for perhaps two hours a day, and the rest of the day is spent debriefing(报告) and improving lessons. English primary teachers, in contrast, are teaching all subjects, rather than specializing in a single area like math.

    Another key difference is that students in China are likely to get far more homework than UK student. Many will also have private tutoring and attend weekend school.

    With so many differences in the two education systems, it remains to be seen whether Chinese math books will benefit students in the UK. However, UK Schools Minister Nick Gibb believes that they will be a huge help. “I am confident that the steps we are taking now will make sure young people are properly prepared for further study and the 21st century workplace, and that the too often heard phrase can't do math' only exists in the past,” he said in a press release.

    The BeiDou Navigation Satellite System（BDS）is a Chinese satellite navigation system. It consists of two separate satellite constellations（星座）. The first BeiDou system, officially called the BeiDou Satellite Navigation Experimental System and also known as BeiDou-1, consists of three satellites, which since 2000 has offered limited coverage and navigation services, mainly for users in China and neighboring regions. Beidou-1 was decommissioned at the end of 2012.

    The second generation of the system, known as COMPASS or BeiDou-2, became operational in China in December 2011 with a partial constellation of 10 satellites in orbit. Since December 2012, it has been offering services to customers in the Asia-Pacific region.

    In 2015, China started the build-up of the third generation BeiDou system（BeiDou-3）in the global coverage constellation. The first BDS-3 satellite was launched on 30 March 2015. Up to January 2018, nine BeiDou-3 satellites have been launched. BeiDou-3 will eventually consist of 35 satellites and is expected to provide global services upon completion in 2020. So far, China has sent 27 BeiDou satellites into space. When fully completed, BeiDou, the world's fourth navigation satellite system, following GPS in the United States, GLONASS in Russia and Galileo in the European Union, will provide an alternative global navigation satellite system to the United States owned Global Positioning System（GPS）, and is expected to be more accurate than the GPS. It was claimed in 2016 that BeiDou-3 will reach millimeter-level accuracy（with post-processing）, which is ten times more accurate than the finest level of GPS.

    According to China Daily, in 2015, fifteen years after the satellite system was launched, it was generating a turnover of $31.5 billion annually for major companies such as China Aerospace Science and Industry Corp, AutoNavi Holdings Ltd, and China North Industries Group Corp.

    Do you like eating processed meat? If you do, think twice now if you want to eat such meat for the sake of your health. Why? It's because eating processed meat can cause cancer, World Health Organization (WHO) experts said last Monday.

    Processed meat is the meat that has been preserved by salting, smoking, drying or canning. Experts from the WHO's International Agency for Research on Cancer (IARC) in Lyon, France studied 800 patients. The experts connected processed meat, such as hot dogs and bacon, with at least three kinds of cancer. A person who eats 50 grams of processed meat per day—about two pieces of bacon—increases his or her risk of bowel(肠) cancer by 18 percent.

    The IARC has included processed meat in its Group 1 list, for which there is “enough evidence” of connection with cancer. Tobacco is also on the Group 1 list.

WHO experts also say red meat, including beef, lamb and pork, is “probably” carcinogenic (致癌的) to humans. Dr. Kurt Strait is with the IARC. He said in a statement that the risk of cancer increases with the amount of meat a person eats. Health experts in some countries advised against eating large amounts of red and processed meat. But those suggestions had been centered on the increased risk of heart disease and obesity.

    However, meat industry groups protest the result of the WHO study. They say that meat is part of a balanced diet. They also say the causes of cancer are broad, and include environment and lifestyle factors.

    The WHO report cites the Global Burden of Disease project, which shows that diets high in processed meat lead to 34,000 cancer deaths per year worldwide.

    Since we are social beings, the quality of our lives depends in large measure on our interpersonal relationships. One strength of the human conditions is our possibility to give and receive support from one another under stressful(有压力的) conditions. Social support makes up of the exchange of resources among people based on their interpersonal ties. Those of us with strong support systems appear better able to deal with major life changes and daily problems. People with strong social ties live longer and have better health than those without such ties. Studies over types of illnesses, from depression to heart disease, show that the presence of social support helps people defend themselves against illness, and the absence of such support makes poor health more likely.

    Social support cushions stress in a number of ways. First, friends, relatives and co-workers may let us know that they value us. Our self-respect is strengthened when we feel accepted by others in spite of our faults and difficulties. Second, other people often provide us with informational support. They help us to define and understand our problems and find solutions to them. Third, we typically find social companionship supportive. Taking part in free-time activities with others helps us to meet our social needs while at the same time distracting (转移注意力) us from our worries and troubles. Finally, other people may give us instrumental support — money aid, material resources, and needed services — that reduces stress by helping us resolve and deal with our problems.

    China will follow up on its successful mission (任务) to the far side of the moon by sending a probe to Mars next year, one of its top space scientists said Sunday. Wu Weiren, chief designer of China's lunar exploration program, said the red planet was the natural next step. "Next year we'll launch a Mars probe to orbit around the Mars, land on it and probe it," he said. China will also send another probe to take back samples from the moon's surface.

    Wu's comments came as a Mars simulation(模拟) base opened in Qinghai's Qaidam Basin. According to the state-run Global Times, while the red rocky area bears a strikingly similarity to Mars, it's extremely difficult to simulate Mars due to its special natural features and hostile environment—low air pressure, strong radiation and frequent sandstorms, as well as vast differences in geography.

    China didn't send its first satellite into orbit until 1970, by which time America had already landed an astronaut on the moon, but it's been catching up fast. Since 2003, China has sent six crews into space and two space labs into Earth's orbit. In 2013, China successfully landed a rover, Yutu 1, on the moon, becoming only the third country to do so.

    Last December, China landed another probe and a rover, Yutu 2, on the far side of the moon. Progress has been slow going since then: due to the extreme conditions there, the rover often has to hibernate to preserve its capabilities for further exploration, Wu said. "The temperature there is minus 190 degrees Celsius, which all components and parts cannot stand. So we let it sleep for a while, making sure it can spend the night safely. A few days ago, it woke up automatically to work. We've gained lots of data in the past few days, and we're going to make the data known to the world,” Wu said.