Mr. Jackson was our science teacher. On the first day of class, he gave us a talk about an animal called wampus. He told us that the wampus lived on earth millions of years ago during the Ice Age and died out because of the change of climate(气候). We all listened carefully and took 1 of everything he said. Later we had a 2.

    When the exam paper was 3to me, I was surprised and sad, there was a big red "×" through each of my answers, I failed. But how come? 4, on the test paper, I had written down 5 Mr. . Jackson said in class.

    Then I realized that no one 6 the exam at all. What had happened?

    "Very simple," Mr. Jackson explained. "I had 7 all that story about the wampus. There had never been any such animal, so the information in your notes was not correct. Do you expect to get 8 marks for incorrect answers？"

    There was no need to say we were 9. What kind of test was this? What kind of teacher was he?

    How could we believe he gave us so much information about an animal that had not been there at all? How was it possible 10 us students to doubt what the teacher taught us?

    "The zeroes on your papers will be 11 in your grade books," he said. And he did it.

Through this experience, Mr. Jackson hoped that we would learn something. Teachers and books are not always 12. In fact, no one is. He told us not to let our mind go to sleep. Instead, we should keep thinking all the time and speak up if we think there are13in our teachers' words or in books.

    We should 14 the habit of doubting, and the ability to decide by ourselves. What a special 15 he gave us.

Children's Games in Ancient China

    During ancient times, children didn't have much to enjoy themselves. However, they came up with interesting games to play in their childhood.

Kicking stone balls

    During the Qing Dynasty, kicking a stone ball around was a popular game in the northern part of
    China, and it was often played in winter to keep warm.

Playing hide and-seek

    Hide-and-seek is a traditional game for children, popular around the nation. There are two ways to play: covering a child's eyes while other kids run around to tease (戏弄) him or, more commonly, others hide and one child must try to find them.

    Flying kites

    Kites have quite a long history. The earliest kites were made of wood, instead of paper. The three most famous kites are the Beijing kite, Tianjin kite and Weifang kite. Each has its own feature. For example, the bird-shaped kite with long wings is a special kind of the Beijing kite.

Watching shadow plays (皮影戏)

    The closest thing to watching a film during ancient times was going to see a shadow play. The artists control puppets (木偶) behind the screen and tell stories to the music.

Are You Right Handed or Left Handed?

    Which hand do you use when write? About 8 to 15 percent of people are left handed. They often have to use tools that are designed for right-handed people. So it is difficult for left-handers to use most tools. If you are right handed, try this experiment: Take a knife with your left hand and try cutting a potato into pieces. Don't be surprised if you feel awkward（别扭的）.

    In the past, people thought it was strange to use the left hand. Young students looked down upon their left-handed classmates. Some children were even punished for using their left hand to write. But these days parents and teachers have accepted that. In almost every school in the world, left-handed students can use their left hand to write.

    What causes people to be left handed or right handed? Experts have searched long and hard on this. They concluded（得出结论） that left-handed people are left handed for the same reason that right-handed people are right handed. One out of every ten people just is a left-hander. It's simply like the color of our eyes—some people have brown eyes, while some others have black eyes.

    However, many researchers think that left-handers and right-handers are different in some aspects. Right-handers are more talkative and outgoing than left-handers. Many right-handed people understand spoken words better. For example, after they listen to directions to a supermarket, they can find it easily. Right-handers are good at organizing people, too. They are also better basketball guards. Just ask Yao Ming.

    Research shows that left-handers are creative and artistic. Many famous performers, like Jim Carrey and Paul McCartney, are left handed. Many left-handers learn better visually（在视觉方面）. In art, both Leonardo da Vinci and Michelangelo were left handed. In science, you find Newton and Einstein. The left-handed people are also really good at tennis and other single sports.

    If you prefer one hand, but you are still good at writing with the other, you are mixed handed. Research shows mixed-handers can remember everyday things better than other people. What did you eat for lunch two weeks ago? If you're mixed handed, you can probably remember.

    Teens want structure in their lives, which means they want their lives well-planned. To begin building structure, teens need love and trust. They need to know their parents are there to give them needed love and support. Teens want to be sure that nothing can prevent parents from shouldering their responsibility for them — not their growing maturity (成熟),misbehavior, nor anger at something they have done. Teens want parents to keep control while allowing them to make some decisions.

    There are some ways you can help your teens create reasonable structure and remain close. One way is to spend time together. Parents often mistake their teens' increased interest in friends for a disinterest in the family.

    Teens would like to spend more time doing things with their parents, but watching TV is not counted as spending time together. As your teens mature, it is important for you and your teens spend time alone together, one to one. Your teens need time to talk to you alone without any other family member present.

    Talk with your teens about their interests and concerns. Make sure you really show interest in what is happening. When talking with your teens, give full attention and do not stop them.

    The way to help your teens become adults is to let your teens into your world. Sharing your emotions and concerns with your teens is important. Avoid causing needless worry.

    Trust your teens. Don't expect the worst. Hope for the best. Telling your teens you don't like their friends will cause the teens not to bring their friends home. If something should go wrong, believe that your teens didn't do it on purpose.

    It is very important that you treat your teens with respect. Teens need the same respect adults show for total strangers. Don't talk down to your teens.

    You need to be supportive of your teens. What may be a small problem to you may be troubling to your teens. Teens don't have the experiences that adults have had. Let the teens know that you understand how much it hurts when something happens that is upsetting or hurtful to them. As they mature, they can look back at some problems they had and laugh at having been upset by something that now seems unimportant.

    The most important things to remember are: talk with your teens, listen to their worries and offer suggestions when needed. This will help your teens to live a well-organized life.

    In today's world, understanding how to analyze big data is a significant tool for students, scientists, and citizens alike-and a key topic during both speeches at the 2019 Research Teachers Conference.

    During their speeches, Lisa Purcell, Senior Scientist at Regeneron and Ruth Krumhansl, founder of the Oceans of Data Institute, both offered recommendations(推荐信) to more than 200 teachers at the conference on how to effectively use big data in the classroom.

    "Having a lot of data is worthless unless you can make sense of it," Ruth said. "We have a responsibility to help our students make wise decisions in a very complex world. " Ruth explained that she is always seeking to increase data literacy(数据素养能力)and transform science education using big data. With these resources, students can conduct a variety of big data research projects -all from the classroom. Moreover, even students interested in non-STEM(科学、技术、工程、数学)careers like consulting or business analytics can benefit from understanding how to analyze and understand data sets.

    Lisa stressed that teachers have the power to change the world by providing the next generation with the correct analytical tools and approaches to handle such large quantities of information. "You can train the next generation with them to do whatever, whether it's dealing with climate change, creating a vaccine (疫苗) for Ebola, or becoming the next President of the U. S. or Prime Minister of Canada," Lisa said.

    Understanding big data is critical to students' success in school and their future careers. According to Ruth, students should begin working with data from a young age. This will enable students to practice analytical thinking as early as possible, and to begin asking important questions about what is going on in our world. And big data can help answer questions that students have. "Students are interested in what is known, but they get more excited about what is not known," she said.

    In China and even in the world, Huawei is a (奇迹）. Although it started producing mobile phones not many years （以前）, it has become one of the most famous phone companies.

    Now Huawei has got third place at the mobile market, just following Apple and Samsung. After seeing more of its （现代的，时髦的）smartphones were so popular last year, Huawei appears to be more confident in its bigger goals. " We hope that in three years our market share can be the top two and in five years our market share can be the top one, " Richard Yu, CEO of Huawei's Consumer Business Group, said in a （最近的）TV interview. The company sold 108 million smartphones in 2016.  （相比于）with 2015, the number increased by 44 percent, though it was much smaller （比）Apple's 231. 5 million iPhones and Samsung's 317. 2 million smartphones.

    "The number of our smartphones is （仍然）growing, " Yu said, "and our company is （期待）an increase of 30% in smartphone shipments(出货量). It'll be a great success. "

    Although Huawei's smartphones sold well in Western Europe and China, the market in the US is （又一个）example. Yu said that the company was "so late" to the US. However, we are trying （努力地）to raise our market share there in the next few years.

    We always remind ourselves that life will be better after we graduate. Then, we are  (worry) that we may not get a good job. After getting a job, we are wondering  we can finish all the work well or not. We think we will certainly be happy when all the problems are dealt with.

    We always imagine living a perfect life after we get a nice car and are able to go on a vacation after we retire. But the  (true) is that there is no better time than right now. Our life will always be  (fill) with challenges. New problems will appear again after we solve the old  . Never doubt  (oneself) when problems come up and it's certain that you can finally manage to get over all the difficulties. It's necessary to realize this and try to be happy every day.

    One of my favorite quotes(引述) from Alfred Souza is that "For a long time it seemed to me that a new and happy life was about to begin. But there were always some difficulties and challenges along the way, something to be dealt with first, some unfinished work, a bill to be paid. Then life would begin. At last I came to understand that these difficulties are just my life."

    This view makes a great difference  me. It gives me courage to face all the difficulties in an active way instead of  (run) away from them. It also helps me know that there is no way to happiness. So value every moment that you have now.

    And always remember time waits for no one. You can never afford to waste your time waiting for a better life to come  the present time is the best. So stop waiting  you graduate, you get married, you have kids and you get a new car. Enjoy your life now!

    Making money isn't just for adults. Kids can do it, too. Making money gives you more than money. By working to make your own money, you'll learn how to succeed in the world. This includes dealing with money, understanding and getting along with other people.  

    Collect soft drink bottles. You can sell the collected bottles and use the money to buy a new basketball.  

    Make greeting cards. If you are good at drawing, try making special cards. You can sell your cards to make money.

    You may have some books that you have read but you don't want to keep. Then you can sell them to make money.

    Win a scholarship(奖学金). If you get good grades at school, you can get some money as prize.  

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    How time flies! My colourful middle school life is nearly ending.  Here is what I think about myself. …