Have you had a headache during a test? Have you ever been so worried about something that you have a headache or even can't sleep at night? If so, then you know what stress is.{#blank#}1{#/blank#} This worry in your mind can make your body feel bad. You may feel angry, sad, scared, or afraid — all of which can give you a stomachache or a headache.

    However, there are different kinds of stress.{#blank#}2{#/blank#} Good stress might happen when you are called to answer questions in class or when you have to give a speech.{#blank#}3{#/blank#} For example, you may do a better job on your test if the stress pushes you to prepare better before the test.

    On the other hand, bad stress can happen if the stress lasts too long. You may not feel well if your parents are fighting, if a family member is sick, if you are having problems at school, or if anything else makes you unhappy every day. That kind of stress isn't going to help you. And it can actually make you sick.

The best way to fight the stress is to have a balanced life.{#blank#}4{#/blank#}  If you get enough sleep and eat properly, and if you exercise and leave time for fun, you'll probably feel less stressed.

    Alex Smith， a fifteen-year-old boy， studied in an American boarding school (寄宿学校). In this school， students could go into town after school in the afternoon{#blank#}1{#/blank#}

    One afternoon， Alex walked to the town. He looked about at the shops and then went to a cinema{#blank#}2{#/blank#}It was eight o'clock. He was a little worried， He walked back to the school as fast as possible.

    When he arrived， he ran quickly to the main entrance (入口). It was locked. He looked up at the window of his dormitory(寑室). It was on the third floor. The window was open{#blank#}3{#/blank#}But the door was also locked. Then he saw another open window on the first floor. It was the window of the teachers' office{#blank#}4{#/blank#}Alex quickly climbed into the room. Just then， he heard someone opened the door. He had to hide under the sofa at once. One minute later， a teacher came in{#blank#}5{#/blank#}Under the sofa Alex had to lie on the floor.

    Playing is serious business for children．In fact, it's what they do best! Ask them why they do it, and kids will probably say, "Because it's fun!" But it's much more than that．It's also good for them．

    Studies show that from birth babies begin learning through playing．They use their five senses to get to know their new world．Touching allows them to discover how different things feel．Brightly coloured toys and clothing help develop a baby's sense of sight (视觉)．When small children choose which toy to play with, they begin developing their abilities in making decisions．

    Children love toys that allow them to use their imagination (想象力)．Sometimes an empty box is more fun than a high-tech (高科技) toy．That's because a box can become anything to a child．

    Crayons, paints and Play-Doh (彩色塑泥) are also good because they allow children to create．Traditional building blocks teach important pre-maths skills．

Playing doesn't become any less important once children start school．Many valuable lessons about life are learned on the school playground．Kids learn how to share, take turns and play by the rules．

    (Zhejiang, Dec. 2) The Liight of Internet Expo opens at Wuzhen, Zhejiang Province, as part of the 2017 World Internet Conference, More than 400 Internet companies, big and small, attended the great event. They include not only industry giants（大公司）such as BMW, Kaspersky, Alibaba and Tencent but also startups that are leaders in some areas of information technology.

    Aliaba s self-service supermarket is a real hit, which shows the future of offline shopping. It allows shoppers to take what they like after scanning a OR code（扫描二维码）． Without waiting in line, it feels like you are picking things from your own table at home.

    In a corner at the expo, the E-take driverless car also gets visitors attention. It is orange and similar in style to a European sports car. It was developed by Zhejiang Hozon New Energy Automobile. A spokesperson for the company said the work of bringing the car to market is progressing well.

    Ofo, a leading bike-sharing company based in Beijing, is present and also has been working on new technology to serve customers. Ofo, working with Huawei Technologies Co, has introduced a smart bicycle lock. It can be unlocked with a smartphonusing near-field communication technology, which is "even easier than scanning a QR code". Li Bofei, a business manager for the company said, "We are trying to make things even easier."

    At the expo, We Doctor Group shows a smartphone. It has a button(按钮)on the back to make things simpler and easier for elderly smartphone users. It allows them to connect to the company's Internet hospital platform ( 平台), which was developed in late 2015.

    Technology is changing our lives, isn't it?

    Why do people cry? Scientists say the body produces tears because they need them. One kind of tears is for the eye, the other is for the heart. They both work as cleaners If something else like dust(灰尘) gets into your eye, tears also come into the eye to clean it out. If you are hurt by something, your strong feelings produce some poisonous chemicals(毒素) in your body, and at the same time, tears come out with them. If these poisonous chemicals are not cleaned out of your body as soon as possible, they will do harm to the heart sooner or later.

    In the United States men have heart problems more often than women do. Doctors say heart problems have something to do with the pressures(压力) of living and working now. Perhaps men suffer more from these illnesses because they do not cry enough. They need to cry more.

    In fact, you can find many ways of reducing the pressures to keep fit. Crying is natural and physical one.

    My wife and I spent two weeks in London last year. We went there in autumn. We think it is the best season to visit England. The weather is usually good and there aren't too many travellers in October.

    We stayed in a small hotel in the West End. It was convenient as we did most of our sightseeing on foot. Taxis were too expensive, we couldn't understand the bus routes, and my wife didn't like travelling on the underground. She said it made her feel sick.

    We went to look at the places which all visitors visit. We saw Buckingham Palace. We went shopping in Oxford Street and spent too much money. What we liked most, of course, was going to the theatre. We didn't have the chance to see such wonderful plays at home. A lot of people say English food is very bad. We didn't think so. It's true that most of the restaurants are French or Italian or Chinese, but we had some very good meals.

    In fact, we enjoyed our holiday so much that we have already booked(预订) again for this year. We're going to take an umbrella. I'm sure we'll need it sometimes.