Unfortunately, three men died in a car accident. Soon they found themselves at the gate of heaven and saw God. Before getting in, God asked each of them the same question. If they could answer the question perfectly, they would be allowed to get into the heaven.

    "I'm sorry for your death," said God. "But when you are in your casket(棺材)and your friends and family are standing beside you, what would you like to hear them say about you?"

    Afraid of being refused, the three men were nervous. They thought for a while.

    The first man said, "I would like to hear them say that I was a great doctor of my time, and a great father to my children." Hearing this, God let him in.

    The second man said. "I would like to hear them say that I was a wonderful husband and school teacher who made a great difference to children." God agreed and let him in too.

      Then it was the last man's turn. He looked anxious and replied, "God, I have lots of things to do for my family and the world. So I would like to hear them say, 'Look! He's moving!' "

    The Whites are French. Now they are in Nanjing. This is their first visit to China. They are going to stay in China for two weeks. They want to visit some big cities and villages. They want to learn some Chinese.

    Mr. White is a doctor. Mrs. White is a teacher. She is visiting a middle school near Nanjing. Their son, Jim, is a middle school student. He meets some Chinese students, and he likes to speak French with them.

    They take a lot of photos in China. When they are back in France, they are going to show the photos to Mrs White's students. They want the students in France to know more about China.

    Brenda Bongos was a happy, talented girl. She had one big dream-to play the drums in a band. But one big problem lay in her way. To be good enough to play in a band, Brenda had to practice a lot, but she lived next-door to a lot of old people. Many of them are sick. She knew that the sound of beating drums would really get them nervous. So, she had tried playing in the strangest places: a basement, a kitchen, and even in a shower. But there was always someone who would get mad.

    One day, while watching a science documentary on TV, she heard that sound cannot travel in space, because there's no air. At that moment, Brenda Bongos decided to become a musical astronaut.

With the help of a lot of time, books and work, Brenda built a space bubble (透明圆形罩). This was a big glass ball connected to a machine which sucked out (抽出) all the air inside. All that would be left inside was a drum kit (成套设备) and a chair. Brenda got into the space suit she had made, entered the bubble，turned on the machine, and played those drums like a wild child.

    It wasn't long before Brenda Bongos became very famous. Many people came to see her play in her space bubble. Shortly afterwards she came out of the bubble and started giving concerts. Her fame spread so much that the government suggested that she be part of a special space journey. Finally,           , and it was far beyond (超越) her first dream of playing drums in a band.

    Years later, when asked how she had achieved all her dreams, she thought for a moment, and said," If those old people next-door hadn't mattered so much to me, I wouldn't have found a solution, and none of this would have ever happened."

    Mr. Chen was puzzled（闲惑的）and a little suspicious（怀疑的）. He sat in the office and studied a letter apparently（看似）from Mrs. Wang, the mother of one of the pupils in his class. There was something about it which worried him.

    "I don't understand," he said to himself. He shook his head as he circled four mistakes in the letter. "Mrs. Wang is an educated woman. She wouldn't make mistakes like these even if she did write the letter in a hurry. "Mr. Chen took out his class register(名册)and said to himself, "Yesterday was Thursday. Let me see. Ah, yes. I thought so. David was absent on Thursday last week and the week before. Hm. Why is he so often absent on Thursdays? Was he really ill yesterday? Could it be a coincidence(巧合)?”

    Mr. Chen stared at the register as if the answers to his questions were hidden in it somewhere. Then he took out a copy of the timetable(课程表)for his class.

    "I wonder." he told to himself. "I wonder if his absence has anything to do with one of these lessons."

    Mr. Chen looked at the subjects for Thursday: Mathematics, English, P. E. He thought about P. E. He knew that the pupils had P. E. twice a week: once on Monday, when they usually played games on the school field, and once on Thursday, when they did exercises in the gym.

    Mr. Chen glanced round the office to find Mr. Long, the rather strict P. E. teacher, but he was not there.

    "I'd better have a chat with Long and David, "Mr. Chen thought.

The bell rang. "I can't do anything right now," Mr. Chen thought. "It's time to go to Class 2. I'll do it later on."

    Mr. Chen picked up his books and walked off to teach Class 2.

Later, on Friday, Mr. Chen spoke to Mr. Long, the P. E. teacher. Mr. Long agreed that it seemed strange for David to be absent so often on gym days. They thought about it for a while.

    "David is a good athlete(运动员)," Mr. Long finally said, "but he's afraid of heights. I was hard on him once because he wouldn't climb more than a couple of meters up the rope. Do you think that's why he's been absent recently?"

    "Yes, I think so," Mr. Chen said. "I'm going to talk to him this afternoon before he goes home."

    "Well, I've got a suggestion to make," said Mr. Long. "If he's scared of heights, he'd better come and see me after school. Quite a few people suffer from (遭受) vertigo. I'll be glad to help him."

    “That's very kind of you," said Mr. Chen. "I'll get him to come and see you on Monday or Tuesday."

    Homeless people face a lot of challenges, - such as not having enough to eat and no job opportunities. Some of the most basic challenges, - however, -are not having clean water and toiletries (卫生用品)-a big problem for homeless teens. That encouraged a young researcher to invent a multi-purpose product to help these teens.

    "I was born into a life of volunteering," said 13-year-old Leia Gluckman. And that's true. Her mom is a president of an organization providing help for homeless teens. Leia and her brother have volunteered there for years. When she was a young girl, Leia helped serve food where teens were eating. Now she's a teenager herself, and she's managing the toiletry and clothing work there.

    From her work at the center, Leia noticed that teens asked for some toiletries more than others. What they needed most often were toothpaste, body powder (粉)and shampoo(洗发水).Leia wondered whether she could create a product to serve all three purposes.

    It would need to take away dirt and oil from skin and hair. It would need to clean teeth. Also, it would need to kill bacteria (病菌)without being harmful to people. She wanted her ingredients (产品成分)to be natural, to be able to break down easily and to taste and smell pleasant. Moreover, this product had to be low﹣cost and have a long shelf life.

    Leia started by going to stores and looking at the ingredient lists for toiletries. Then she tried eight different ways. She tested each way to see how well it worked.

    Not all of them worked well. But she finally decided on three. Each includes salt and baking powder. Salt helps clean teeth and skin; baking powder helps take in bad smells. She also has some other recipes which include some special materials that give her products different tastes and smells, which would let teens choose a product based on personal preferences.

    It wasn't easy, but Leia came up with some model products. She presented them at the finals of Broadcom MASTERS science competition.

    Leia wants to develop her products further. "Could it possibly be used to drive away mosquitoes (蚊子)?" she wonders.

    "Science offers a way to go about solving problems and helping people," says Leia. And she thinks her products could benefit a great number of people, not just the homeless. Anyone in an area with little or no chance to get clean water could find her products useful, maybe refugees (难民) and soldiers who are sent to places without running water.