Thomas Alva Edison is one of the greatest inventors of all times. One of his most famous achievements is the electric light. He tried thousands of times to make a long lasting light bulb. Although the light bulb is not his invention, he is the only one to have made such a successful light bulb. Many people remember him for the invention of the electric light. He held a lot of patents (专利权) worldwide. Many of them were approved(批准) in America.

    We can find his inventions in many fields. In fact, many of the advanced inventions were based on his ideas. He invented a phonograph (留声机),a film picture camera, a ticket recorder and so on.  

    Edison was not a good student at school. But he loved to do new experiments. When he was still a child, he built his first lab to perform his experiments.

      An amazing story of Edison's childhood is that he almost made his servant die. Edison used to think that birds ate insects and these insects might make them fly. So he collected these insects and blended (混合) them to make juice. He then let his servant drink the juice. After drinking the juice, the girl lost her sense. But luckily, she was saved.

    Zeb Hogan is always traveling around the world to save endangered fish.

This famous ecologist(生态学家) grew up in a city in Arizona, America, but he had a big backyard with lots of trees. He spent his free time climbing trees and catching animals with his brother. They each had their favorite places in the biggest tree and they worked out ways to climb from tree to tree without ever touching the ground. Their family went camping in the summer and they would usually visit zoos and aquariums(水族馆) on their family vacations. His clearest memories as a child all had to do with animals and the outdoors. As he was older, he became interested in animal shows on TV and he would wake up early to watch Wild, Wild World of Animals before the other family woke up.

    One day when we talked about fish, he said, “As an ecologist, Mr. White, you should know that fish in most parts of the world have a hard life, such as the Mekong giant catfish, the Chinese paddlefish, taimen, and the Murray cod. They are all in danger and have to do with all kinds of challenges all by themselves. Water pollution is one of them. So these fish really need our help."

    Mr. Smith lives in a village, but he works in a big city. He goes to work by train every morning and comes home in the same way.

    This morning, when he is reading his newspaper on the train, a man behind him says "hello" to him and begins to talk to him, "Your life is not interesting, is it? "You take the same  train  every  morning,  and  you  always  sit  in  the  same  seat  and  read  the  same newspaper." "How do you know all that about me?"Mr. Smith says angrily （生气地）.

    "Because I always sit in the same seat behind you." the man answers.

    Mr. Brown is from England. He and his wife（妻子）are teachers. They teach English in Shanghai. They have a boy and a girl. They are John and Lucy. John is a middle school student, but Lucy is not. She is only six.

    They have two bikes. One is big, and the other is small. The big one is for John. The small one is for Lucy.

    On Sundays, sometimes they are at home, sometimes they go to the parks. They like China.

    They have a lot of（很多的）Chinese friends.

    This is Tom. He is a student. He is in Class Four, Grade Seven. There are 25 girls and 20 boys in his class. His English teacher is Mr. Zheng. He is about 31. He is a good teacher. The students all like him.

    Tom has a good friend. His name is Jim. He is from Canada. He is in Class Four, Grade Seven, too. Tom and Jim live in China now.