Every year there is a Spring Festival in China. Usually it is in January or February. It is the most important festival in China. So before it comes, everyone has to prepare things. They buy pork， beef, chicken, fruits and many other things. And they often make a special kind of food—“dumplings”. It means “come together”. On the day before the festival, parents buy new clothes for their children. Children also buy presents for their parents. On the Spring Festival Eve (除夕)，all the family members come back to their hometown. This is a happy moment. Some sing and dance, some play cards and others get the dinner ready. When they enjoy the meal, they give each other the best wishes for the coming year. They all have a good time.

    Astronomy (天文学) is the oldest science known to man. Thousands of years ago man looked at the stars and wondered about heavens(天堂). But the six planets that he could see with his eyes alone limited man.

    The Greeks studied astronomy over 2,000 years ago. They could see the size, color, and brightness of a star. They could see its place in the sky. They watched the stars move as the seasons changed. But the Greeks had no tools to help themselves study the heavens.

    Each new tool added to the field of astronomy helped man reach out into space. Until there were telescopes(望远镜), man did not know much about the moon. He did not know that the planet called Saturn(土星) had rings around it. His sight was so limited that he could not see all the planets. In the early 1700s, people thought there were only six planets. Pluto (冥王星), the last of the nine planets to be discovered was seen until 1930.

    Before the spectroscopes (分光镜), man didn't know what kind of gas was in the sun or other stars, without radio telescopes(射电望远镜), we did not know that radio noise came from far in space.

    Today, astronomy is a growing science. We have learned more in the past fifty years than in the whole history of astronomy.

    Four years ago, we asked ourselves: what if we could create a shopping experience with no waiting in lines and no checkout? Or could we create a physical store where customers could simply take what they want and go? Our answer to those questions is Amazon Go, where you could experience the idea of "just walk out shopping".

    Amazon Go is a new kind of store with no checkout required. We created the world's most advanced shopping technology, so you never have to wait in line. With our "just walk out shopping" experience, simply use the Amazon Go app to enter the store, take the products you want, and go! No lines, no checkout.

    Our checkout-free shopping experience is made possible by the same types of technologies used in self-driving cars: computer vision, sensor fusion, and deep learning. Our "just walk out technology" automatically detects when products are taken from or returned to the shelves and keeps track of them in your virtual cart（虚拟购物车）. When you've done shopping, you can just leave the store. Shortly after, we'll charge your Amazon account and send you a receipt(收据).

    We offer delicious ready-to-eat breakfast, lunch, dinner, and snack options made fresh every day by our on-site chefs and favorite local kitchens and bakeries. Our selection of foodstuff ranges from bread and milk to cheeses and locally made chocolates. You'll find well-known brands we love, plus special finds we're excited to introduce to customers. For a quick home-cooked dinner, pick up one of our chef-designed Amazon Meal Kits, and you can make a meal for two in about 30 minutes.

    Our 1,800-square-foot shopping space is conveniently compact(紧凑的), so busy customers can get in and out fast. It is located at 2131, 7th Ave, Seattle, WA, on the corner of 7th Avenue and Blanchard Street. All you need is an Amazon account, a supported smartphone, and the free Amazon Go app.

    Amazon Go is currently only open to Amazon employees in our testing program, and will be open to the public soon.

    A good relationship between students and teachers makes the classroom a very inviting place. When you like your teachers, it's easier to pay attention to their explanations and improve your marks. When you consider your teachers as friends, you'll certainly have more respect for them. When your teachers consider you to be a friend, they'll feel more open in class and that will probably influence the classroom in a positive way. Now here are some tips to develop a friendly relationship with your teachers:

    Ask questions. If you have any questions about that subject, ask them. Show them that you're interested in their subjects. That will make them notice you. But never ask questions that you already know the answers to. If your teachers realize that you are not asking real questions, they might think that you're not actually trying to learn, but only trying to make an impression.

    Talk about non-school subjects. When you see one of your teachers in the hall, greet him/her and ask if he/she is going to that concert or if he/she has seen that movie. That way you'll show that you consider him/her as a reined. Some teachers don't like to have friendly relationships with students, but most of them are happy to chat with their students. After a while, they may start to talk with you about non-school subjects in the classroom.

    The rest is totally up to you; it is very easy to develop a friendly relationship with any of your teachers. If you want to be friends with your teachers, just treat them as friends, but don't forget that no matter how good friends you are, they will still be your teachers and deserve your respect.

    The belief that new technologies are causing the death of work is the idea that never goes away. Despite evidence to the contrary, we still view technological change today as being more rapid and dramatic in its consequences for work than ever before. But this is nothing new. People have always viewed the technological changes that take place during their lives as the most dramatic and dangerous that ever happened in history.

    In the 1930s, the British economist(经济学家) John Maynard Keynes predicted the widespread use of electricity would produce a world where people spend most of their time doing nothing. In the United States during the 1960s, the government repeatedly investigates fears that automatic machines would permanently reduce the amount of work available. In 1988, one Australian historian claimed that at least a quarter of the workforce would be without jobs within 10 years because of computers.

    Of course, none of these disasters came to pass in the United Kingdom, the United States and Australia, or anywhere else.

    Yet today, we are seeing the return of these predictions, with some experts claiming the world of work is once more undergoing radical(激进的)and unprecedented(前所未有的) change. They argue that robots and other workplace technologies are causing a reduction in the total amount of work available, or are bringing a more rapid pace of substitution of machines for humans than has been seen previously.

    But there is a little evidence to support such beliefs. Statistics show that the percentage of people in work, the number of hours they work, and how frequently they change jobs have remained remarkably constant over the past 20 years.

    This stability should not come as a surprise. There are good reasons why we should not expect new technologies to cause the death of work. New technologies always cause job losses, but that is only part of the story. What also needs to be understood is how they increase the amount of work available.

    One way this happens is through the increases in incomes that accompany the use of new technologies. With the introduction of these technologies, goods and services can be produced faster, which results in higher real incomes for workers. Higher incomes then increase demand for other products and consequently more workers are needed to make them. Additionally, while new technologies are likely to substitute for some types of workers, they will also increase demand for other types of workers, especially those with higher level skills and expertise.

    So, the end of work is no closer today than at any time in the past. But there is still a need to keep disproving the prediction, to reduce people's fears.

    The sun was shining and Clare felt like doing something active. She'd had enough of the moment of living in the past. What she really wanted was some skiing if she could get herself organized. She walked into the ski school office and within ten minutes had arranged a private class for the whole afternoon. One of the ski teacher would meet her at the ski lift station at the end of the village at midday. The ski hire shop next door rented her some skis and boots and she carried them back to the hotel. There she changed into some more or less suitable clothes and took the hotel's electric taxi down to the lift station. She was a bit early and had time to look around, and get nervous. She hadn't skied for about ten years, though she'd been quite good at that time. Everyone said it was liking riding a bike-you didn't forget how to do it. She stood there looking up at the mountains, trying to remember what to do.

    Madam Newton?" Yes," she said. And there was her ski teacher, looking exactly like all the other ski teachers she remembered sun-tanned, handsome and totally self-confident. Half an hour later all thoughts of the unhappy days had disappeared as she skied behind Bruno and concentrated on staying on her feet.

    "Upper body still, make your legs do the work, Madame", shouted Bruno over his shoulder. "Call me Clare, please" she said. "OK. Lean forward a bit more, Clare. That's it. Good. You are remembering now, en?" "Yeah, I am ... slowly. It's great. I'd forgotten what an amazing buzz skiing gives you".

    They skied down some different runs with Bruno being wonderfully encouraging, and she really did begin to feel confident on the skis. Going up in the lifts, Clare and Bruno chatted — just the usual "where are you from, what do you do" sort of chat, but it was pleasantly relaxing. In the middle of the afternoon, they stopped at an old farmhouse for coffee and apple cake. There were lots of other skiers doing the same. Clare felt as if she belonged - something about being part of a group, all with a shared interest, she supposed. It was a feeling she'd not had for a long time.

    Bruno said hello to a few people, and went over to talk to one of the waiters. Clare took the opportunity to study him a bit. Up until now, she'd just been skiing behind a man in a red ski suit, so it was interesting to see that he was quite tall, with curly brown hair and eyes to match. From the colour of his face he looked as if he'd spent his whole life in the open air. She guessed he was about forty.

    "Are you in Zermatt for long, Clare?" asked Bruno, after he'd been sitting with her a few minutes, "No, only a few days probably. Just a short break to get away from everything at home", replied Clare. She didn't feel like explaining the real reason. People looked at her differently when they knew. "But I'd like to do some more skiing. Would you be able to do anything tomorrow?"

    "I think so. But you'll have to book it through the ski school office. I can't arrange anything with you directly", said Bruno, putting on his gloves and standing up. "Come on. Let's do a bit more now." "Great," replied Clare. After another hour, Clare said, "Time to stop, I think," Bruno agreed. "You should have a sauna tonight. It'll help your body relax. Not so stiff (僵硬的）tomorrow, you know." Clare didn't care about stiff she was going to be tomorrow. She hadn't felt quite as good as this for months — full of fresh air, physically tired but in her mind — alive. Happy! Yes, that was how she felt.