“When I grow up， I want to be...”

    Almost all of us have thought about，or been asked to think about，our future careers. Our answers may differ greatly. Even now your aspirations(志向，抱负)may have changed from when you were in primary school.

    However，it seems that career choices aren't only based on personal taste. In a survey carried out by Teens， doctors，lawyers，and bankers were some of most popular careers that people said they hoped to follow. This is similar to a survey carried out in the UK in May 2016 by job website—Co.uk，in which medicine was the top choice among UK teenagers aged between 13 and 17.

    Medicine and law are two of the oldest and best known professions. Their prestige (威望) may come from the fact that doctors and lawyers are much­respected members of society，and they make good money. What's more， these professions are often seen as a sign of upward social class.

    It is equally unsurprising that banking is now one of the most common career choices. Youngsters worldwide think of banking and see the money rolling in. Wealth is increasingly becoming one of the most important indicators(标志) of a successful career.

    However，not every child has the makings of doctor， lawyer， or banker. They are those who see achievement and happiness in other areas. As the Teens' survey discovered，a variety of unconventional(非传统的) jobs—coffee shop owner，waiter at a fast food restaurant—are among teenagers' career choices. They can be equally interesting and rewarding jobs.

    With every choice comes responsibility and challenge，and all career paths require specific education and training，you have to learn to balance optimism(乐观主义)and confidence with being realistic about your particular talents and skills.

    Scientists have found that human eyes are more likely to be damaged by UV rays while skiing in the snow-covered areas than sitting on the beach, according to a report by the UK newspaper.

    The researchers at Kanazawa Medical University, Japan and American company Johnson conducted the study together. They looked at the effects of light reflection on newly fallen snow on a ski trail in Ishikawa District, northern Japan. They compared the results with the levels of UV rays on a sand beach in southern Japan's Okinawa District.

    They found that on the beach, eyes are exposed to a daily 260 kilojoules (千焦耳) of UV a square meter compared to 658 kilojoules  in snow-covered areas.

The findings are supported by the Japan Meteorological (气象的) Agency. According to the agency, the reflection rate of UV light on beaches is often between 10 and 25 percent, compared to 80 percent in the new snow areas. The amount of light increased 4 percent with a 300-meter rise in height.

    Most of us know that UV rays can harm the skin. That's why we wear sunscreen on our skin before we get out in the sun. But many of us may not realize that UV rays are also harmful to the eyes.

    If your eyes are exposed to large amounts of UV radiation over a short period of time, you may experience a kind of sunburn of the eye, which is harmful. Your eyes will become red and feel a strange feeling. They may be sensitive to light. Fortunately, this is usually temporary and seldom causes permanent damage to the eyes.

    Long-term exposure to UV radiation, however, can be more serious. Scientific studies and researches have shown that exposure to small amounts of UV radiation over a period of many years increases the chance of eye damage, which could lead to total blindness.

    Sure, it's good to get along with your teacher because it makes the time you spend in the classroom more pleasant. And yes, it's good to get along with your teacher because, in general, it's smart to learn how to relate to the different types of people you'll meet throughout your life. But really, there's one super-important reason why you should get along with your teacher. Kids who get along with their teachers not only learn more, but they're more comfortable asking question and getting extra help. This makes it easier to understand new materials and do yours best on tests.

    When you have this kind of relationship with a teacher, he or she can be someone to turn to with problems, such as problems with learning or school issues.

    As a kid in elementary or middle school, you're at a wonderful stage in your life. You're like a sponge (海绵), able to suck up lots of new and exciting information. On top of that, you're able to think about all this information in new ways. Your teacher knows that, and in most cases, is thrilled to be the person who's giving you all that material and helping you put it together. Remember, teachers are people, too, and they feel great if you're open to what they're teaching you. That's why they wanted to be teachers in the first place to teach!

    Some kids may be able to learn in any setting, whether they like the teacher or not. But most kids are sensitive to the way they get along with the teacher, and if things aren't going well, they won't learn as well and won't enjoy being in class.

    British chemist David Evans has become an overnight celebrity on Chinese social media. His chemistry experiments have attracted over 2 million followers in just a few months. Evans is a chemistry professor at the Beijing University of Chemical Technology. The 60-year-old always wears a white lab coat, a pair of safety goggles (护目镜), and smiles often. Some web users say he looks just like the “grandpa of KFC”.

    Evans has posted videos of various experiments. His most popular experiments have attracted millions of hits on video-sharing apps. Excited children's cheers and shouts can be heard in his videos. “I hope my experiments can arouse people's interest in science,” he says.

    Evans has been interested in China since childhood. In the early 1970s, before the reform and opening-up, he viewed it as a “country full of mysteries”. He first visited the Chinese mainland in 1987 to attend a chemistry conference in Nanjing, Jiangsu Province. He quit his job in the United Kingdom and moved to Beijing in 1996. Many of his friends thought he was crazy. But Evans says they just saw China's challenges but not its potential.

    Since 2011, Evans has turned to the Internet to popularize science. He learned short-video apps are also popular in small cities and rural areas. And he realized this enables him to reach more students, who lack opportunities to perform fun experiments. But even a one-minute video requires a considerable amount of work. Still, he thinks it's worth it to fulfill his responsibility to popularize science.

    His experiments always fill schools' lecture halls with laughter. Some viewers call him “a Harry Potter-like magician”, but he disagrees. “A magician never tells the secrets behind his tricks, but a scientist always gives an explanation.” He sees himself as a teacher. He performs experiments to spread knowledge, inspire thinking, remove misunderstandings and show that science can create change. Evans says he looks forward to more “chemical reactions” with China.

Martha Payne is 9 years old. She lives in a small community in Scotland. Martha is interested in the food at her school. She is interested in how good it tastes, and how healthy it is, and whether it contains any hairs. A few months ago, she started to write a blog about her school dinners. She photographed her school dinners, and then posted the pictures on her blog and told us what she thought about the food. Most days, she thought the food was OK, and on some days she thought it was really good.

Children in other schools, and other countries, started to read Martha's blog. Some of them left comments on Martha's school dinners. And some sent Martha pictures of their own school dinners, and Martha published these on her blog. Then Martha started to use her blog to raise money for a charity called Mary's Meals, which provides school meals for children in poor communities in developing countries.

And at this point, the officials who run the education system in the part of Scotland where Martha lives became aware of her blog. They didn't want publicity for the food in their schools. Perhaps they were afraid that people would start to criticize (批评) their school dinners and say that they were unhealthy. They said that Martha's blog had to stop.

Martha's head teacher told Martha the bad news, and Martha was sad and wrote a final blog post to say goodbye to her readers. The newspapers, the radio and the television all carried stories about Martha's blog. This was not at all what the officials wanted. A day later, they decided that Martha could continue writing her blog about her school dinners, and taking pictures of them.