B

    A man bought a donkey (驴子) at the market one day and took him home. Now the man has owned several donkeys already and he knew them very well. One of the donkeys was very strong and brave, another was moody(喜怒无常的). One donkey was very lazy, he hated going to work in the morning and he did as little as he could all day long. When the other animals were being loaded(装载) up, he always tried to be the last so that he would get the lightest load.

    The man took the new donkey into the yard. For a moment he stood there, looking at his new friends. Then, without thinking, he walked up to the lazy donkey and began eating comfortably at his side.

    Though it was late in the day, the man immediately took the new donkey out of the yard, straight back to the market. "You cannot do like this," said the merchant (商人), "It is only ten minutes since you bought him."

    "I don't need him any more," replied the man, "I know just what he is like from the friend he chose for himself. Take him away and give my money back. I don't need donkeys like him."

    Emma's dream was to be a boxer. All her life, everyone said she couldn't be a boxer because she was a girl. They said that she should just get a normal job. Her parents told her that she would be killed one day if she kept boxing. It was hard to hear "you can't" all the time. Emma still decided to prove everyone was wrong.

    Emma's life was hard. Girls didn't like her, because they thought she was too manly (有男子气概的). Boys didn't like her, because they thought she wasn't as good at boxing as they were. Because of all these, Emma didn't have any friends at school. She always sat alone in the cafeteria (自助餐厅), and it was hard for her to find partners for group projects.

    However, Emma did have friends from her boxing class. They were all female (女人) boxers. They understood what Emma was going through because they were in the same situation. All they had was each other. They were a family. Because of this, Emma was always excited for boxing class. One day, she was going to be a famous boxer.

   There are some great scientists whose research has changed the whole world. Here are some of them.

    Everyone faces challenges in their life, but some are more important than others. Daniel Kish had serious problems with his eyes when he was born. And doctors took away both of his eyes before he was fourteen months old.

    Soon after, however, he started to do an amazing thing. He started to make clicking(咔嗒) sounds with his tongue(舌头) to help him move around. Much like a bat(蝙蝠), he now moves about using sonar(声呐). He is so good at it that he can ride a bicycle in traffic. He and his group, World Access for the Blind, teach others how to use sonar. In this interview with National Geographic, Kish explains how the process works.

    How does sonar work?

    "When I make a clicking sound, it makes sound waves. These waves reflect(反射) off surfaces all around and return to my ears. My brain then processes the sounds into images(图像). It's like having a conversation with the environment

    When you click, what do you see in your mind?

    "Each click is like a camera flash. I make a 3D image of the things around me for hundreds of feet in every direction

    What is it like riding a bike using sonar?

    "It's exciting and enjoyable but requires a lot of focus. I click up to two times per second, much more than I usually do."

    Is it dangerous to move around the world in this way?

"Much of the world lives in fear of things that we mostly imagine. I have a habit of climbing anything and everything, but I never broke a bone (骨头) as a kid."

    How challenging is it to teach people to use sonar?

    "Many students are surprised how quickly results come. Seeing isn't in the eyes, it's in the mind."

    Roger is new in town, and it has been hard to make friends. The kids at school are nice, but Roger is shy. His birthday is coming up soon. He is planning a big party. It will be a lot of fun. There will be cake, and ice cream, and a treasure hunt(寻宝游戏). But what if none of the other kids want to come?

    One week before his party, Roger and his dad go to their favorite restaurant. Benny's Pizza Parlor makes the best pizza in town. Roger orders a large pizza, with four kinds of cheese and extra pepperoni (意大利香肠). He loves every bite. When he is finished, Roger and his dad go to the kitchen to talk to Benny.

"How was the pizza?" Benny asks.

    "It was great!" says Roger.

    "Thank you!" says Benny.

    Suddenly, Roger gets a great idea. "Benny," he says. "Will you cook pizza for my birthday party?"

    "Hold on, Roger," says Roger's dad. "Benny is very busy. He might not have time to make pizza for your party." "But everyone loves his pizza!" says Roger. "If we have it, I'll be the most popular boy in school."

    "I know what to do," says Benny. "I won't cook pizza for your party. Instead, I'll show you how to make it yourself!" That week, Roger goes to Benny's Pizza Parlor every day after school. Benny shows him how to make pizza and he tries his best.

    Roger tells the kids at school that his party will have pizza from Benny's. Everyone is excited. Everyone loves Benny's pizza. But when they come to his house, Benny isn't there. Instead, they see Roger, wearing an apron(围裙) and a chef's hat. The kids don't believe that Roger knows how to make pizza. However, he's ready to prove them wrong. Roger makes them his favorite pizza, with four kinds of cheese, and extra pepperoni. Everyone says the pizza tastes just like Benny's. It might even be just a little bit better.