Little Tom down the street calls our dog "The keep dog". Zip is a sheep dog. But when Tom tries to say " Sheep", it comes out "keep". And in a way Tom is right. Zip is always bringing things home for us to keep! I'll tell you about some of them. Zip's first present was a shoe. It was made of green silk. We didn't know how Zip found the shoe. But after a moment, Mary, my big sister, told me the shoe had a strange smell. I nodded(点头) and held my nose. "What do you think it is?" "It smells like something for cleaning. I think someone tried to clean a spot (污点) off the shoe. Then he put it at the door to dry." Along came Zip. And good-bye shoe!" I said. "We should take it back." "We can't".said my sister. "Maybe little Tom is right," Mary said. "Maybe Zip is a keep dog!"

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    Grown-ups are often surprised by how well they remember something they learned as children but have never practiced ever since. A man who has not had a chance to go swimming for years can still swim as well as ever when he gets back in the water. He can get on a bicycle after many years and still ride away. He can play catch and hit a ball as well as his son. A mother who has not thought about the words for years can teach her daughter the poem that begins "Twinkle, twinkle, little star" or remember the story of Cinderella or Goldilocks and the Three Bears.

    One explanation is the law of overlearning, which can be stated as follows: Once we have learned something, additional learning trials increase the length of time we will remember it.

    In childhood we usually continue to practice such skills as swimming, bicycle riding, and playing baseball long after we have learned them. We continue to listen to and remind ourselves of words such as "Twinkle, twinkle, little star" and childhood tales such as Cinderella and Goldilocks. We not only learn but overlearn.

    The multiplication tables(乘法口诀表) are an exception to the general rule that we forget rather quickly the things that we learn in school, because they are another of the things we overlearn in childhood. The law of overlearning explains why cramming (突击学习) for an examination, though it may result in a passing grade, is not a satisfactory way to learn a college course. By cramming, a student may learn the subject well enough to get by on the examination, but he is likely soon to forget almost everything he learned. A little overlearning, on the other hand, is really necessary for one's future development.

    I could feel the judging eyes of my family burning a hole into the back of my head as I picked up my phone. All of a sudden, the chattering in the living room died and all I could hear was the sound of the turkey sizzling (发出嘶嘶声) in the oven.

    “Look at her! She's been on her phone all day long! It's all your fault! Children will never respect elders if they are not taught how to behave! ” my grandmother shouted.

    I was very shocked and angry! I opened my mouth to say something, but words failed me and I just sat down quietly on the chair like a mouse in its trap. I thought “Here we go again.” I truly love my family and I would do anything for them. I also know that they would do anything for me as well. However, there are moments that make me feel like they are just stuck with me. They all agree on one thing: technology is wrecking me.

    If I am going to be treated like a child or completely ignored, I will most likely not enjoy your company, and I feel like this applies to (适用于） the majority of the people. So I sometimes simply shut myself in my room and listened to the voices coming from the living room, thinking: They all grew up in a world so different that it amazes me how they have actually gotten this far. They did not have phones or any type of advanced technology, which is both good and bad. Bad because they had almost no type of fast communication, and good because they were forced to interact (互动) with one another, which is something today's society is lacking in. However, maybe if they made an effort to be aware of how things work nowadays, they would not be so against everything.

    You may need to give first aid. First aid is defined(下定义) as the emergency care given to a sick or injured person. The goals of first aid are to prevent death and to prevent injuries from becoming worse.

    Each emergency condition is different. However, the following rules apply to any kind of emergency.

    Be aware of your limitations. Do not try to do more than you are able to. Nor should you do things if you are unfamiliar with them. Do what you can under the conditions at the time.

    Stay calm. Acting calmly will help the victim feel safe.

    Take a quick look to see if the victim is bleeding, and if there is a pulse.

    Keep the victim lying down and do not move him or her.You could make an injury worse if you move the victim.

    Take necessary emergency steps.

    Call for help or ask someone to make the EMS system（急救系统）start.

    Do not remove clothing unless you have to.If clothing must be removed,tear the clothes along the seams（线缝）.

    Keep the victim warm. Cover the victim with a blanket. Coats and sweaters can be used if a blanket cannot be found.

    Reassure the victim. Explain what is happening and that help has been called.

    Do not give the victim any food or fruits.

    Keep the bystanders away from the victim. Bystanders want to have a look, offer advice, and say something about the victim's condition. The victim may believe that the condition is worse than it really is.

I will never forget the year 1979. I was just ten years old when my father decided to take me to see a stunt (特技) show starring the famous motorcyclist, Evel Knievel. After seeing the amazing stunts, I started dreaming about riding bikes and performing stunts myself one day.

My whole childhood was spent at skate parks; there was a group of us that would go there every day after school with our BMX bikes (a type of bicycle designed to ride on rough ground). After all, I would need to get some practice if I was going to be like my hero!

My later teenage years were spent competing in endless BMX freestyling championships; some I won and others I lost. But it was never about the trophies (奖杯). The atmosphere was magical, with over 1,000 riders at some events. I just loved the rush of energy I got from this, and from continuously trying newer, more daring stunts.

In 1995, I was chosen to compete in an important international action sports competition. For once in my life I was nervous. I landed badly on my hand and got injured. It took me out of the sport for a while, but my attitude was: "If others have suffered more and gone on, then why can't I?" I had once read that Evel Knievel suffered a total of thirty­five broken bones.

When the International Olympic Committee made BMX an Olympic sport, I couldn't have been more delighted! The way I see it, the sport finally got the recognition it deserved. Its entry into the Olympics encourages more people to take it up seriously.

I have heard some people say that BMX is too dangerous for kids. The risks, though, are really no greater than, say skateboarding. With riders pushing the limits far beyond what I could ever have imagined when I first started riding professionally, BMX seems set to remain one of the most exciting sports in history.