Barditch High School decided to an All-School Reunion. Over 450 people came to the event. There were tours of the old school building and a picnic at Confederate Park. Several former teachers were on hand to tell stories about the old days. Ms. Mabel Yates, the English teacher for fifty years, was wheeled to the Park.

    Some eyes rolled and there were a few low groans(嘟囔声)when Ms.Yates was about to speak. Many started looking at their watches and coming up with excuses to be anywhere instead of preparing to listen to a lecture from an old woman who had few kind words for her students and made them work harder than all the other teachers combined.

    Then Ms. Yates started to speak:

     “I can't tell you how pleased I am to be here. I haven't seen many of you since your graduation, but I have followed your careers and enjoyed your victories as well as crying for your tragedies. I have a large collection of newspaper photographs of my students. Although I haven't appeared in person, I have attended your college graduations, weddings and even the birth your children, in my imagination.”

    Ms. Yates paused and started crying a bit. Then she continued:

     “It was my belief that if I pushed you as hard as I could, some of you would succeed to please me and others would succeed to annoy me. Regardless of our motives, I can see that you have all been successful in you chosen path.”

     “There is no greater comfort for an educator than to see the end result of his or her years of work. You have all been a great source of pleasure and pride for me and I want you to know I love you all from the bottom of my heart.”

    There was a silence over the crowd for a few seconds and then someone started clapping. Tee clapping turned into cheering, then into a deafening roar(呼喊). Lawyers, truck drivers, bankers and models were rubbing their eyes or crying openly with no shame all because of the words from a long forgotten English teacher from their hometown.

    Self-driving vehicles(车辆) will rely on cameras, sensors and artificial intelligence (人工智能) to recognize and respond to road and traffic conditions, but sensing is the most effective for objects and movement in the neighborhood of the vehicle. Not everything important in a car's environment will be caught by the vehicle's camera. Another vehicle approaching at high speed on a collision (碰撞) track might not be visible until it's too late. This is why vehicle-to-vehicle communication is undergoing rapid development. Our research shows that cars will need to be able to chat and cooperate on the road, although the technical challenges are still great.

    The usages of vehicle-to-vehicle communication contain vehicles driving together in a row, as well as safety messages about nearby emergency vehicles. Vehicles could alert each other to avoid collisions or share notices about passers-by and bicycles. From as far as several hundred metres away, vehicles could exchange messages with one another or receive information from roadside units（RSUs）about nearby incidents or dangerous road conditions through 4G network. A high level of AI seems required for such vehicles, not only to self-drive from A to B, but also to react intelligently to messages received. Vehicles will need to plan, reason, strategize and adapt according to information received in real time and to carry out cooperative behaviors. For example, a group of autonomous vehicles might avoid a route together because of possible risks, or a vehicle could decide to drop someone off earlier due to messages received, a foreseen crowding ahead.

    Further applications(应用) of vehicle-to-vehicle communication are still being researched, including how to perform cooperative behavior.

    Hummingbirds (蜂鸟) are very small birds. This small bird is quite an acrobat (杂技演员). Only a few birds, such as kingfishers and sunbirds, can hover, which means to stay in one place in the air. But no other bird can match the flying skills of the hummingbird. The hummingbird can hover, fly backward and fly upside down!

    Hummingbirds got their name because their wings move very quickly when they fly. This causes a humming sound. Their wings move so fast that you can't see them at all. This takes a lot of energy. These little birds must have food about every 20 minutes to have enough strength to fly. Their favorite food is nectar (花蜜). Nectar is the sweet water deep inside a flower. Hummingbirds use their long, thin bills to drink from flowers. When a hummingbird drinks nectar, it hovers in front of a flower. It never touches the flower with its wings or feet.

    Of all the birds in the world, the hummingbird's colors are among the brightest. Some are bright green with red and white markings. Some are purple. One kind of hummingbird can change its color from reddish-brown to purple to red!

    The hummingbird's nest is special, too. It looks like a small cup. The inside of the nest is very soft. This is because one of the things the mother bird uses to build the nest is the silk from a spider's web (蜘蛛网).

    What makes a sense of humor is a difficult thing to tell. Different people find different things funny, and what may seem hilarious to some, will be highly rude to others. However, having some kind of sense of humor is important for reducing stress and getting along with others. Therefore, it's important to think about ways to improve your sense of humor.

    Look for the funny side of situations. While it can be difficult at times to find the funny side in unfortunate events when you're having a bad day, try to think about how the situation might look like to other people, and attempt not to get too angry. Laughing over minor accidents, trips and falls will help you in preventing the loss of temper that you will regret later.

    Learn some basic jokes. Some people find it hard to remember jokes, and feel left out when others are telling them. It's worth trying to learn a few jokes that you can pull out the bag when you need to, or regularly think about how you can turn a funny situation that occurs in daily life into an entertaining anecdote(趣闻) for later.

    Look at joke or humor cards. There are many different kinds of funny cards available, which can be a great inspiration for finding ways to improve your sense of humor. Giving an appropriate funny card to friends and family on the right occasion will show that you have a good sense of humor and are thinking about them.

    Learn from friends. Look at friends that you think have a great sense of humor. How do they deal with situations, and what kind of jokes do they make? Is there anything you can take away from their actions?

    Devon Gallagher, a college graduate from Philadelphia, wants the world to know exactly here she's been during her worldwide vacation in a special way.

    The traveler, who was born with a bone disease, had her right leg amputated(k)at the age of four. Although the amputation caused setbacks for Gallagher early on, she now sees it as nothing short of inspiration for living her best life.

    To spread that message, Gallagher has taken to social media, where she shares photos of her travels across the globe, but instead of simply using a geo-tag, she writes her location across her artificial leg before taking a picture.

    Now she has been taking pictures across the Continent, which show her cycling over the canal in Amsterdam relaxing on a wall overlooking the city of Barcelona, posing with a waffle in Brussels, taking in the spectacular Parthenon temple in Athens and enjoying a river cruise in Budapest, all with the well-known locations written on her artificial leg “I get a new leg every two years and I can choose the design on it. One day I had a sudden thought to get a chalk-board, "Gallagher said. "My mum and grand-mother weren't too keen on the idea, but my friends thought it was great and told me to go for it, so I did.”

    Gallagher said people often stare when she's writing on her leg, but once she shares the photos she receives only positive feedback. "My leg hasn't stopped me from doing anything I've wanted to do," she said. "I don't know if it's my determination to prove to myself that I can do it, but regardless, I've been able to keep up with my peers and lead a pretty great life, Gallagher shows us that you should never let anything stand in the way of your dreams. And if life gives you an artificial leg, make art

    I was so fortunate today to be able to offer my love and help to an older lady at my local supermarket. I saw her standing there. I felt quite strange about such a situation.

    What was she looking at? As I looked, I found it was a "Shredded Pork Bun Meal Kit", which is a service that sends customers food ingredients and recipes for them to prepare their own fresh meals. "That's new," I thought. Then I watched as the lady began to dig into her handbag and tried to pull out one of the biggest magnifying glasses (放大镜) I had never seen in my whole life! "Oh, she can't read it," I realized.

    So I stood there and continued watching her. The voice in my mind often asks me to do the right thing. It told me to help her. But I argued back saying, "No. I won't offer help. It will only embarrass her and she is OK now anyway. She has the world's biggest magnifying glass to help her！"

    And I stood there longer. But the voice came back, "Help her, Nicole. Don't be embarrassed. Just do it. Offer your help." So I did it. I read and explained all the things that were included in that box. I read out the ingredients, the instructions on how to cook it and so on.

    She didn't end up buying it, but she was still quite grateful. I walked away knowing that I had helped her and made the right choice. Mostly, I had reminded her that people in this world still care about the old.

    She was seen. She was loved. And she mattered so much that a complete stranger took time to help her. And that stranger was me, a person who argued and didn't want to do so in the beginning.

    So grateful I am when I choose to listen to the voice in my heart. It is because of love. Love is all that ever really matters. I also get happiness through helping her.