The most valuable gift I have ever received was a photo album from my best friend Kevin.

      Kevin and I were classmates for all six years of primary school. We both had the same interests, so we always had a lot of things to talk about. It is wonderful to have such a good friend.

      However, last summer, Kevin had to move to another city because of his father's job. Then he gave me a photo album. “It has photos of the memorable events we have experienced together. I've also written some notes under each photo,” he said. I was deeply moved.

      I put the album beside my bed. I always look at it when I think of Kevin.

Daming想在国外eBay网上购买CD, 但他从网上搜到"淘淘"经验有点杂乱, 请帮助Daming将这些杂乱的信息整理成一副购物流程图, 完成购物, 第一步已给出.

A. Compare the CDs in the list. You can look at the prices or other customers'opinions. This can help you decide which one you want to buy.

B. Go to www. eBay. com and create an eBay account. You need to fill in an online form with your information. To pay for your order, you also need to get one on PayPat.

C. After you have an account, you can look for the CD you want. Type the name of the CD in the search box. You will see a list of CDs.

D. When you decide which one to buy, you can click "Buy It Now" and then finish your order with the correct address（better both in English and Chinese）, your telephone number and suitable ways of post. Finally, pay for it and you will receive it in about 20 to 30 days.

E. However, if you are not satisfied with it, it is possible to return the CD in 5 working days. I hope this step is never needed.

F. Once you receive the CD, check it carefully. If you are satisfied with it, you can go back to eBay website and give your opinions on it.

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    On June 26th, 2000, two scientists, called Francis Collins and Craig Venter, told the world that they could now read the whole “map” of the human body: DNA. DNA is something that all humans have, and it tells the body what to do. DNA is the reason that we look like our mother and father, because we get some of their DNA to make our own. Now we can read some of this “map”, and so we can find out more about how our bodies work.

    People have been trying to understand the human body for a long time. In 1860, Gregory Mendel discovered that there is a special reason why we look the same as other people in our family. It is because of small things called “genes” that we have in our body. In 1953, James Watson and Francis Crick made another discovery and found out that those small parts are really messages written in the DNA with a special language.

    In 1961, Marshall Nirenberg and Johann Matthaei found the first “word” that they could understand in that language, showing how DNA tells the cell to build its parts. This meant that one day we would be able to read all the messages that a human body gets from its parents' bodies. Scientists have now found all the words in DNA map, but we still do not understand what they all do. By understanding what just one “word” means, we can help save people from several diseases. So the more we understand, the more doctors will be able to do.

    Most people hope that this will help to make better medicine and help people who are very ill. Other people worry about that when we learn more words and find out lots of other information, we still use it in the wrong way, just to make people more attractive, or stop sick people getting jobs.

    When I spent the summer with my grandmother, she always sent me to a store with a long shopping list. How could I hope to find all these things? In the store, there was a tall lady with black glasses on her nose. There wasn't a smile on her face.

    “Excuse me,” I said. She looked down and said, “I'm Miss Bee.”

    “I need to get these.” I said, holding up my list. “So? Go to get them. ” Miss Bee pointed to some shelves. “There's no one here, only you and me, so get yourself a basket and get all these things yourself.”

    That summer I visited Miss Bee twice a week. Sometimes she gave me wrong change. One afternoon I corrected her, “That bag of beans is only twenty-nine cents!”She just looked at me over her glasses and changed the price. Going to the store was more like going into battle. I got into the store just like General Patton getting into North Africa.

    Soon I learned how to find the product on the shelf… At the end of the summer, the shopping trip only took me 15 minutes. Before I left, I stopped in the store to get some candy.

    “All right, little girl,” she said. “What did you learn this summer?” Before I could answer. Miss Bee laughed and said, “I know what you think of me. Well, I don't care! My job is to teach every child some life lessons. When you get older you'll be glad you ever met Miss Bee. Haha!...”

    I didn't think of her words. Years passed, one day my daughter came to me with her homework. “It's too hard,” she said. “Could you finish my math problems for me?”

    “If I do it for you, how will you ever learn to do it yourself?” I said. Suddenly, I was back at that store and I knew what I learned from the old lady that summer.

    Every year， thousands of people get hurt（受伤） or die（死亡） when they are crossing the road{#blank#}1{#/blank#}.

    Old people often get hurt or die because they can't see or hear very well. Children usually meet with accident（事故） because of their carelessness（粗心）{#blank#}2{#/blank#}.

    How can we lessen(减少)traffic accidents? All of us must follow the traffic rules. {#blank#}3{#/blank#} I they drive too fast, it will be very difficult to stop the car in a very short time. For the walkers, it's very important to be careful when they are walking on the road. So when we walk across the road we must try0 walk along the pavements（人行道）{#blank#}4{#/blank#}Look left first, next look right, and then look left again, When we are sure that the road is clear, we can cross it, The right way to cross the road is to walk quickly. {#blank#}5{#/blank#} If people run across the road, they may fall down.

    We should try to help children, old people or blind people to cross the road, and never play in the street.

    People in different countries speak different languages. But is there a lanuage that can be understood by everyone in the world ? Emojis might be the first truly universal (通用的) language.

    Emojis are a kind of special language. Pictures are used to put meaning across, A group called the Unicode Consortium is in charge of choosing official (官方的) emojis. It has added new emojis every year since 2014. These new emojis do not come out of nowhere. They come from what people think about, like and care about.

    Emojis can be used to represent (代表) different groups of people. In 2015, emoji faces with different skin tones (肤色) were added. In 2016, different jobs were added, such as doctor, police officer and painter along with female versions of these jobs, This year, emojis of disabled people were added, including emojis of blind people and people in wheel chairs.

    But there is also more to emojis. They can also refer to pop culture and new cultural trends. New emojis in 2019 have included several animals, such as sloths (树懒) and flamingos (火烈鸟). These animals are not very common, but are known to many people. For example, sloths have become popular thanks to the 2016 film Zootopia (《疯狂动物城》). Many fashion designers have included flamingos in their designs in recent years. This animal makes people feel like they're on a tropical (热带) vacation.

    It seems that emojis are a mirror of the world we live in. It will be interesting to see how they change and grow in the years to come.