Sports can help us a lot. Taking exercise can make us strong. In collective(集体的) sports like basketball, volleyball, or football, we will learn the importance of cooperation. And sports can also help us relax after work or study.

However, as the saying goes, "There are two sides of everything." Sometimes we may hurt other players or ourselves if we are not careful enough when participating(参加) in sports activities. What's more, too much or hard practice can be bad for our health.

    Sports can make us healthy both physically and psychologically(心理地). It is also a good way for people to know each other and can improve friendship between people. So long as we are careful enough, sports can do us nothing but good.

    In the USA, there are many kinds of restaurants.

    Fast food restaurant are very famous. You can find McDonald's and Kentucky Fried Chicken in many countries around the world. You look at a menu(菜单) on the counter(柜台), and say what you'd like to eat. You pay the person who brings food to you. You take your food and sit down or take it away. There's no need to leave a tip(小费).

    In a coffee shop, you sit at the counter or at a table. You don't wait for the waitress to show you where to sit. She usually brings you coffee when you sit down. You tell her what you'd like to eat and she brings it to you. You pay the cashier(收银员) as you leave.

    In a family restaurant, the waitress shows you where you can sit. Often the waitress tells you her name, but you don't need to tell her yours. If you can't finish eating everything, your waitress gives you a doggy bag to take the rest of food home. You should add (增加) fifteen per cent(百分比） to the bill(账单) as a tip.

    In top class restaurants, you had better order before you come, and you need to arrive on time. The waiter shows you where to sit. If you have wine there, he may ask you to taste it. You can only refuse it if it tastes bad. When you get your Bill, check it and then add fifteen to twenty per cent to it as a tip for the waiter.

    The People's Bank of China will come out the fifth edition(版本)of the renminbi (RMB) from August 30, 2019. These banknotes(纸币)will have brighter colors and new security features(防伪特征).

    We've been using banknotes for around 1,000 years. Back in the Northern Song Dynasty, Chinese people made the worlds earliest paper money to replace(代替) metal coins. These banknotes were called jiaozi.

    Paper money is cheaper to make and easier to carry. These advantages made it more popular than other forms of money. But now, in the digital (数码的)age, paper money seems to be disappearing for the same reason.

    China seems to be heading towards becoming a cashless(不用现金的) society. From supermarkets to street stores, people pay by using the We Chat Wallet and Alipay apps on their mobile phones. Sweden is even closer to a future without paper money. Many Swedish banks no longer even have cash on hand.

    But there are worries about creating cashless societies. Some say it is unfair to the poor and people without much education. It's not easy for them to open bank accounts( 账户)or deal with mobile phones. And if all of your money is" digital, it may not be safe enough.

    Is paper money going away? Although paper money is used less than electronic payment (电子支付) in some countries, it won' t disappear at once in most parts of the world.

    Not only adults but also teenagers have problems in their life. Here is a survey showing the main problems of teenagers.

    They feel stressed because they have too much homework to do both at school and at home. They have lots of exams to take. And parents usually send them to different classes at weekends. (3)They don't have their own time to do what they are interested in.

    Now more and more teenagers are getting short-sighted. They often read in bed or keep reading for a long time without having a rest. Some of them are crazy about playing computer games. Some spend too much time watching TV. (4)Another serious problem among teenagers is that many of them are becoming fat. They eat too much junk food, but they take little exercise.

    I think teenagers should think of ways to deal with the problems. They should make a plan for study and hobbies and find time to relax as much as possible.

    I finished my cooking course(课程) at the age of 21. I thought I was going to become a world-famous cook. I hoped people would travel from all over the world just to get a taste of my food. But three months later, I knew I was wrong. Since(既然) nobody was travelling to taste my food, I decided I should travel to taste theirs.

    During my travel, I visited many different countries, such as Japan and France, where different kinds of food opened my eyes. I liked the travelling in Italy and China most.

    When in Italy, I learned how to make pizza and salads. We had long lazy lunches in the sun and evening meals where the conversations went on long into the night.

    In China, I loved the hot Sichuan food and enjoyed the delicious Beijing snacks. I also found the joy of making dumplings with good friends.

    My year of travel came to an end too quickly, but I had decided what I should do for the rest(剩余的) of my life. I want to bring the wonderful food of the world into my kitchen in New York.

Hello, I am Mary. I live in Chengdu. It's sunny and cool in my city now. I'm studying at home. My parents are shopping. What's the weather like in your city? And what are you doing?