We often think of Edison when we talk about inventions. He was ______ in 1847. Known as a famous inventor, he had more than 2,000 _______ during his life. Without doubt, he has made great contribution to the whole world.

Edison was not clever when he was young. But he was ______ at observing and thinking. One day, his father found him squatting(蹲) on the grass. “What are you doing?” asked his father. Edison answered, “I am giving birth to a little chicken.” He told his father that he saw a hen giving birth to a chicken by accident. He thought, “A hen can give birth to a chicken, what about me?” So he did the same as the _______. He seemed to have a point. Edison was curious about everything. For example, he wanted to know ________ the train worked and then he tried to find out the answer by himself. Edison went to school at the _______ of seven. But he thought the school was very boring. So he didn’t listen to the teacher _______. As a result, he did badly _______ his study. Three months later, he was forced to leave school. Edison’s mother had to teach him at home and answered all kinds of his strange questions. One day, his mother bought him a book _____ Natural Reader. He was very interested in the little experiments in the book. So he ______ a small lab at home and began to do experiments by himself. Later, he became a great inventor.