— No, I won't. I know that __________________ of us are perfect after all.

— Wait a moment. I __________________ some snacks in a shop.

— She was born in London and is living in New York now.

— __________________. We are so proud of them.

    One day, it was raining heavily and getting dark. I was1for a dating in a nearby city that I knew only by GPS, and now my phone had no power. The usual

interstate exits were closed and I couldn't2because it was raining so much and there were few cars on the road. So I couldn't3how to get to the place I was going or how to let my friends know that I was4to arrive on time.

    I stopped at a McDonald's in a poor part of a town and walked up to a woman and her5."I'm sorry," I said, "but do you mind if I search a number on your6and make a call to my friends? I need to let7know I'm lost." Without any thinking, she handed me her phone and then told me I was8.I felt confused about what she said. Then she continued that she was about to turn her phone off9she didn't have enough money to pay her bill.

    The young girl and the mother seemed to be clinging to each other and talked together as I made the10I managed to get in touch with my friends. They thankfully knew where I was and told me11to get there.

    As I was ready to12, I reached into my wallet. I didn't usually have cash, but that day I found a $20 bill. Thankfully, I pressed it into the mother's hand and then turned to leave13Suddenly, I heard the mother crying as I walked14the door. Her daughter called after me and said, "You have no idea how much you just15us."

    I still think back to that day, Even now, they had no idea how much they helped me, yet I was the one being thanked. It's funny how that works.

    Parents, teachers and others who deal closely with teenagers know how difficult the teenage years can be, as teenagers always do wild and even dangerous things. Now, brain-imaging technology allows scientists to study the physical development of the brain in more detail to learn why teenagers act differently from adults.

    Recently, scientists discovered that though our brains are almost at their full size by the age of six, they are far from fully developed. Only during teenage years do our brains truly "grow up". During this time, they go through great changes. These changes were once thought to be finished by age 12. Now, scientists have found our brains continue to change till age 25. The result is the unpredictable actions seen in teenagers.

    The studies show that teenagers prefer to take more risks and act in more dangerous ways. One way the brain does this is by changing the way teenagers think of risk and reward. When teenagers think about rewards, their brains produce more chemicals that create pleasure than an adult brain would. Researchers believe this makes the rewards seem more important than the risks, and makes teenagers feel more excited about the new experiences than adults do.

    Research also found it makes social connections seem especially rewarding. Generally speaking, teenagers have a stronger need to meet new people. This is because teenagers begin to realize the people of the same age may one day control the world they live in. Because it's still developing, a teenage brain can change to deal with new situations. So, it connects social rewards with even more pleasure. In this way, the brain encourages teenagers to have a wide circle of friends, which is believed to make them more successful in life.

    Unluckily, this hunt for greater rewards can sometimes lead teenagers to make bad decisions. However, it also means teenagers are less afraid to try new things. The teenage brains are what help teenagers prepare for adult life.

    Each country has its own "art of living". For example, the word "niksen" shows how Dutch people fight stress and tiredness in a fast- paced lifestyle.

    The term "niksen" comes from the Dutch word "niks", which refers to"nothing". In practice, "niksen" could be as simple as just relaxing, looking at your surroundings or listening to music - as long as it's without purpose and not done in order to achieve something. Think "simply sitting in a chair or looking out of the window," says Ruut Veenhoven, a professor at Erasmus University who studies happiness.

    "Niksen" sounds contrary to the advice that we were all given as kids. Nowadays, we're always told to stay busy and work harder than everyone else. But "niksen" is against that attitude. It offers the chance to "deliciously do nothing", as Carolien Hamming told Time. She thinks that "niksen" is very important to staying healthy, since it's a form of mental relaxation and healing. Just like a wild animal lying in wait for their food, "niksen" seems to be a natural state of being.

    For some people,"niksen" can mean more than just mental relaxation. It's also a way to imagine new ideas or plans. As an early adopter of "niksen", Jenny Holden, adds it to her daily lunch breaks. "Within 10 minutes of doing nothing-just staring and listening to myself-my head began to clear and pick out my work and home to-do lists", she told the Metro UK. However, for many, doing nothing isn't as simple as it sounds. In fact, it can be somewhat challenging to sit still and stare out a window.

    Above all, "niksen" is a suggestion for balancing work and rest. As Dutch-born writer Ogla Mecking wrote in Whoolly Magazine,"niksen" is the full enjoyment of life's breaks".

    Everyone is encouraged to have your "niksen" moments. They give you the strength to face everyday challenges.

    At eighty-six, Grandpa was still a good gardener, so I always watched for his earliest blooms. I was especially interested in flowers that year because I was planning to look after my own yard and hoped to get Grandpa's advice.

    It was right after the first rush of purple violets that spring that Grandpa had a stroke. It left him without speech and with no movement on his left side. The whole family took turns to spend many hours by his side. Some days his eyes were eloquent - listening carefully and laughing at our reported troubles. As for his inability to care for himself, he didn't show any painful feelings. There was always a gentle smile on his face. There were days, too, when he slept most of the time, fighting with his coming death.

    As some months passed, I helped look after the garden with Grandpa's eyes. Each time I was with him, I gave him a garden report. He listened, holding my hand with the sure strength and calmness he had always had.

    Grandpa's illness held him through the spring and on, week by week, through summer. As I waited and watched in the garden and by Grandpa's side, I found some quiet truths. I realized Grandpa loved flowers that always bloomed. But I also noticed he left plenty of room for the sunlight to come in. Not every corner of his garden was constantly in bloom, but there was always a treasured surprise somewhere.

    I came to see, too, that Grandpa's garden mirrored his life. He was a hard-working worker who knew the law of the harvest. But along with his hard work, Grandpa knew how to enjoy each season, and each change. Few flowers last from April to November - some of the most beautiful bloom for only a month at most. To really enjoy garden, you have to plant rows of flowers, each in its own season. Even when it is time in winter-few flower8 bloom, there is still sunshine to enjoy.

    It was the end of August when Grandpa died. I cut some flowers in Grandpa's garden for him. We all felt how much Grandpa would have liked that,

    The October after Grandpa's death, I planted different flowers in the garden. Each bloom was a love sent to Grandpa. and n promise of spring.

    Last year, China started testing 5G mobile networks in        (数个) cities across China. Hongkou in Shanghai was the first        (区域) to get he 5G network into use.

    What is 5G? It's the latest generation of cellular network technology. It is faster and more stable than 4G.5G's benefits mainly come from speed and connectivity. The        (优点) of higher speed is obvious. People will be able to use the Internet at a much greater speed than before. Imagine being able to download a movie in just a few        (秒). That's how fast 5G will be.

    Such speed is also a great help to driverless cars. Driverless cars must be able to react        (立即) to sudden changes in their environment, such as a dog running across the road. This will require these cars        (发送) and receive huge amounts of data within very short time. 5G will make this        (可能的). It will also allow doctors to do operations far        (远离) from them, using robots. So what about connectivity? With 5G, we may develop"       (更智能的)"environments. Imagine having a house that turns the lights on when you open your front door.

    No matter where it is gotten into use, it looks like 5G        (带来) us a more exciting future.

参考词汇: spit 吐痰

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    Recently, with the outbreak of novel coronavirus, more and more people get to know the importance of healthy living.