With the completion of the Beijing Winter Games, the city has become the first in the world to host both the Summer and Winter Olympic Games.
As Beijing normally doesn't have much snow in winter, artificial snow has been used at venues for the Beijing 2022 Olympic winter Games.
"If you want to wait for nature ensured the smooth running of the Winter Games. provide you with all of the required materials to ski on, you risk not being able organize a competition," the former International Ski Federation (FIS) freestyle coordinator Joseph Fitzgerald told Xinhua.
Artificial snow has been commonly seen in the Olympic Winter Games for decades ever since its first use in Lake Placid, New York, in 1980. Artificial snow has many benefits. It's fairer and safer for athletes, competing during each event Competition snow requires a higher density (密度) than recreational snow in order to meet the requirements of the FIS. Different from natural snow, certain characteristics of the artificial snow can be easily changed to meet the qualities and needs of different competition venues(场地).
Snow machines at the Beijing 2022 Winter Games all ran on renewable energy"We have designed the latest in snow-making. It's very efficient in terms of energy consumption and the use of water,"Davide Cerato , an Italian mountain operation expert in charge of snow-making in Zhangjiakou, told China Daily. "Water used for snow-making only comes from rainfall and surface run-off, and it can be recycled, Wei Qinghua, the mountain operation manager at the Zhangjiakou, told Shine, a Shanghai-based news platform. A sewage (污水) treatment station has also been established to process the sanitary(卫生的)sewage from the competition zone into recycling water for plant-watering and toilet use, Sun Xianghui, an engineer from Beijing Beikong Jing'ao Construction Corporation, told Xinhua.
Recently, our school held a show called "Us After Ten Years", where the speakers presented what they would become in the future. It was a sort of "coming-of-age"ceremony. The student representatives predicted their future careers. At first, I didn't care about the activity, but just four days before the ceremony, my head teacher asked me to take the place of one student who got ill. I was amazed, but I had no choice, as it was an honor to be asked."Be confident, Susan," she encouraged me.
There were three barriers during my preparation. Firstly, I didn't have a clear career path at that time. Luckily, my classmates suggested that I should choose to be a diplomat(外交官)，who is persuasive, hardworking, and enjoys creative thinking, like me. Secondly, I had to choose a representative scene to show my career. My first design was to hold a press conference. However, that would have taken longer than the scheduled time. Eventually, I decided on coming back to my school and giving a speech to the current students about my job. Thirdly, I had to decide the presentation style. During my first two practices, I tried to imitate the foreign ministry spokesmen. But I felt embarrassed and couldn't find myself like a true spokesperson when speaking. I told myself, "You are unique, so just be yourself and create your own style."
Finally the day came. Wearing a uniform, I paced backstage with my heart beating wildly. I couldn't stop thinking,"Will I be too nervous to speak fluently? What if I don't perform like a diplomat? Is my speech good enough?" Trying to calm myself down, I took a deep breath and then felt a little more relaxed.
Then came my time. I walked steadily onto the stage, waving to my audience. The bright lights and screams from the hall suddenly surrounded me tightly.
Fortunately everything went as expected. When the last speech concluded, the pride. suddenly shifted into a whole sense of relief, and then a sense of I'm proud that I have overcome the mental barriers and challenges. I'm also proud of Chinese diplomats, who meet all kinds of questions and emergencies every day but manage to keep showing Chinese wisdom and conveying Chinese values. That's the kind of person I want to be!
My mother-in-law left us an unexpected and priceless gift. After she died, my husband and his sister were going through the contents of her house when they discovered every letter we'd written to her during our 46-year marriage. She also kept all the letters my mother had written to her over the years.
During my holidays, I've had time to go through these letters. I read about our early married life, our struggle to have children and. especially the progress of our three children from birth to adulthood. I began writing all these details for my children, and now they have details about when they were small. I discovered much I'd forgotten.
To read the letters written by my mother to my husband's mother is a gift. I wish I'd saved my mother's letters to me, but now I have these letters that tell me things about my own mother I never knew. I see Mom and Mamma shared their great love for us and for our children.
I come from a long line of letter writers and was trained to stay in touch with our parents. My grandparents loved to receive letters from across the ocean. When I was away on a student exchange in 1970, my mother told me my grandfather kept my airmail letters in his pocket and read them daily. Knowing this, I've tried my best to write to our family regularly.
To all of you who write to me. I thank you. The handwritten word is a powerful tool of friendship and it connects us together. Perhaps the greatest gift these letters have given me is to see how much my husband's parent treasured our letters to her. The letters helped her know her grandchildren and feel like part of our lives. I shall collect and arrange them for my children so that they can read the events of our lives and know they were treasured, too.
Keep writing to those you love. Those letters are our greatest gifts to each other.
Facial recognition cameras are everywhere. Many people rely on this technology to unlock their phones open doors or make quick payments, but there is a problem :Everyone is wearing masks. What a hassle!
Now, tech companies have updated their software. Facial recognition technology can now recognize people even if they are wearing a mask. Beijing-based tech company Hanwang has announced a software that can correctly recognize 95% of people wearing masks, Engineering & Technology (E&T) reported. What's the secret? It's all about your eyes.
Marios Savvides, a professor at Carnegie Mellon University, US, studies facial recognition technology. As we get older, he said, our faces change shape, but not the area around our eyes. It stays the same -even if we put on weight. Another company, Geneva-based Tech5, has also been working on this kind of software. It has AI that measures the shape of your face. It also scans your irises(虹膜)and hopes to ignore all of the face below the nose. Japan's NEC Corp. claims an astonishing 99.9% accuracy rate when identifying people with masks. The UK's Metropolitan Police Service has been approved to buy and use NEC Corp.'s facial recognition technology, Forbes reported.
Facial recognition software is about more than just unlocking your phone. It's about public safety. For example, you don't need to present an ID card, which can be lost or stolen. It also means that germs aren't spread by touching things, said has NEC's Shinya Takeshima."Touchless verification(验证）has become extremely important due to COVID-19,"he said to Reuters.
"We hope to contribute to safety and peace of mind."
More than that, facial recognition can be used to fight crime. "It can detect crime suspects and terrorists,"said Huang Lei, Hanwang's vice president. Hanwang's technology is used by the police in high-security settings, Reuters reported. This means places like government buildings, subway stations and airports. Similar technology is used by the United States Air Force and other governments.
Huang Lei admits one big weakness of this technology: It fails when people wear both a mask and sunglasses."In this situation, all of the key facial information is lost, "Huang said to E&T.
It's easy to talk yourself out of exercising. Even when you have the best intentions to work out, excuses are so easy to find -"I'm too tired","I'm busy" or"The weather is bad". Don't worry!
※ Take baby steps.
You'll never try to run 10 miles just in a single day, right? When you do too much too soon, you'll end up injured and discouraged. Take it easy as you get stated. Maybe you only run a quarter of a mile during your first week.
※ Show the clock who is boss.
Health experts say that you should aim for at least 150 minutes of exercise a week, plus weight training at least twice a week. If you work too late to get to a gym, keep a set of weights at home. If you can't do 30 minutes at once, break it up into 10or 15 minutes' sections.
※
Your workout should be just as much a habit as brushing your teeth or eating breakfast. When it's part of your routine, you won't even have to think about it. In a few months, fitness can be regular in your day.
※ Keep it real.
You're not going to shake off 30 pounds in a week. Gradually, you should increase your workout schedule from 2 to 3 days a week, or exercise for 15more minutes each time.
※Celebrate.
It takes weeks to see real changes. Therefore, even a pound of weight loss or a pound of muscle gain is the reason to reward yourself.
A. Do it for yourself.
B. Try to get used to it.
C. Go out with friends or buy a pair of jeans.
D. Keep a fitness journal to record your progress.
E. Aim for something that is realistic as a first step.
F. The following tricks can keep your fitness routine on track.
G. When it gets easy for you, you'll surely make it more challenging.
In September 2019, I was travelling alone along a track at Cabbage Tree Creek(小溪)，Mount Nebo. Although I'd done it many times before, I wanted to be 1. So, I filled my backpack with 2 like food. warm clothing, maps and so on.
I reached the base of a waterfall. From there. I started 3 the rocks at the right side of the falls. But around three-quarters of the way up, I 4, breaking my left wrist on a rock before dropping into the water. I knew I was 5 as soon as I started swimming. Finally, I 6 myself up onto the bank and saw my foot was hanging from my leg. I made a splint(夹板)to keep it in place. Then I got my phone from my dry bag. There was no 7 ,but I figured I could make the thirty metres east to get coverage. 8,as I went to put the phone in my pocket it fell into the creek. Now I 9 . Surrounded by thick rainforest, there was no 10 that anyone would find me. But I knew there was a junction(汇合处）of two creeks three kilometres away, where a helicopter could 11me.
12 to walk, I relied on my right hand and set off on my bottom. The following three days were very13 . Every metre I stopped to take a rest. To keep myself 14I thought about my family and 15 myself. It was an incredible 16 when I reached a waterhole on my way where I drank. 17 ,I was rescued by a helicopter in the end.
I was told that it was my boss who found I hadn't18 on Monday morning and phoned my sister. She called a few people, including my friend Judy, who 19 to know about my walking plans. I didn't even remember telling her, but I was so 20 I had!
Now I'm back to exploring the great outdoors -but I always tell people where I'm going.
Once there was a girl rich father wished her to marry a rich man, but she was (determine) to find her own husband who would love her. At first, her father overlooked her point of view. But she insisted and at last they came to a compromise if she couldn't find herself a husband in one year, she would have to reconsider the rich man her father suggested. So, she left home. Unfortunately, all her money (steal), and she had to work in a laundry washing clothes. It was heavy work and she often sobbed at nighttiredness, but she stayed.
One day she got so thirsty that she went into a tea shop. At a table was a young man (wear) a shabby coat.
"Would you like to join me?" he asked. "You look as if you are in need of a drink." The young man poured her a cup of tea from a teapot, (add) cream and offered her a cookie. She (grateful) accepted and before long they chatted like old friends. The young man happily paid for the food. Imagine their (amaze) when they discovered that they were both rich and looking for true love. Her father's (happy) was complete when the girl returned with a rich husband.
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
删除：把多余的词用斜线(\ )划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：
1．每处错误及其修改均仅限一词；
2））只允许修改10处，多者（从第11处起）不计分。
The other day, our class had made an interesting outing. Though we enjoyed the charming scenery and fresh air all the way, we were astonishing to see some bad behavior. Some people threw rubbish here and there, turn the public place into a large dustbin. Others carved word on famous buildings or picked flowers casually.
An eco-friendly journey not only allows us express our love for nature but need our responsibility. As we enjoy the beauty of nature, we can't damage them. Only when we improve our aware of eco-friendly travel can the earth become more beautiful. After all, which matters most for us is the earth because it is the only place for us to live.
