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    Mick Polly，an owner of a toy store，lives with his teenage daughter Carolina in Kentucky．He is known as the Bike Man．Over the past five years，Mick has built hundreds of bikes for needy kids．

    One day in 2012，a 13﹣year﹣old boy with a broken bike walked by Mick's house．"I was working in my garage（车库），and he asked if I could fix it，"says Mick，now 53．

    The boy's bike had a broken wheel．Mick sent a post（帖子） on Facebook，asking his friends if they had the needed part．One friend saw the post and gave away two used bikes．Mick took parts from each to build a new set of wheels for the boy．

    Soon after，Mick repaired a bike for the boy's brother and fixed one for his sister．Word spread，and during the year，he had fixed up lots of bikes for local kids whose parents were not able to afford new ones ．

    "People are throwing away bikes day and night，"says Mick．

    Mick puts the bikes and bike parts in his garage．"I take off the good tires or the handlebars or the seats and use them，"he says．

    Up to now，the bike man has repaired hundreds of bikes and given away nearly 700newly repaired bikes．They're free，but the kids must agree to two things：They have to learn how to put waste things to good use and they have to try their best to study in school．

    If a kid's grades are low，Mick requires a teacher's note"saying that you're doing your best，"Mick says．Mick also hopes the bikes will get kids off the sofa．"When I was growing up，we all rode our bikes，"he says．"Hopefully these kids can get some exercise．"

B

    Barry and Kim are twin(孪生的) brother and sister. But they like different sports. Barry likes soccer. He is in the school soccer club（俱乐部） and he plays soccer every day. He has 9 soccer balls in his bookcase. He also likes volleyball. He has 2 white volleyballs and 2 blue volleyballs. But Kim doesn't like soccer or volleyball. She likes tennis. Tennis is interesting. She is in the school tennis club and she plays tennis every day. She has 7 tennis balls and 2 tennis rackets in her room. She also likes baseballs. She has 5 baseballs, 2 green baseballs and 3 yellow baseballs.

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    Zhang Heng was a famous scientist in the history of China. His invention Hou Feng Seismometer was a great success and it helped us understand the world better.

    I am Tom. My mom told me my first and second words were "Mommy" and "Daddy". The next one was "No". I didn't want to eat vegetables. I didn't want to go to bed early. I didn't want to study in the school. Being the "baby" of the family (I have two sisters)，I said a lot of "No".

    When I became a middle school student, my father had a talk with me. He asked me to say "Yes" more than "No". "You can have a different life when you do that," he said.

    Then I began to say "Yes" more. When mom asked me to give her a cup of tea, I said "Yes". I saw a big smile on her face. When Dad asked me to buy some food for him，I said "Yes". When he said "thanks" to me, I felt excited and happy. When I met problems in study, I said "Yes, I can do it!" I began to study hard and got good grades.

    Saying "Yes" can bring good luck to me and make me happy. Let's say "Yes" to life. Say "Yes" when others ask for help. Say "Yes" to make this world be a good place.

    One pleasant evening, I was holding Grandpa's hand and taking a walk in the park. "Where are the peanuts? Give me now!" He suddenly said. How I wished I had some with me! "William, the monkeys are taking long to come out today. Wait till they smell the peanuts." I knew he was lost in one of his memories again. I remembered the stories he told me of how he fed the monkeys when he was a kid. Then, he saw the goldfish! He acted as if he was seeing them for the first time.

    Poor Grandpa! He fell ill with Alzheimer's disease (阿尔茨海默症) last year. The doctor said it was a progressive brain disorder which could destroy (破坏) a person's memory. The patient might also not be able to make reasonable judgments (判断). The saddening part was that it was a lifelong disease. But when my parents invited him to stay with us, he refused and said he liked living alone. One day, he forgot to turn off the fire after cooking porridge. Luckily, one of the neighbors came to help him before the fire could spread.

    It was then that my parents brought Grandpa to live with us. Often, he would forget my name and ask me who I was and what I was doing in his house. Each time I would answer softly, "It's me, Ray, Grandpa!" Even if he had forgotten who I was, he would always be my beloved grandfather.