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阅读以下内容，并完成下面摘要，每空限填一词。
Thomas Alva Edison loved to question(对……有疑问)things. He loved to learn how things worked. He also loved to make things work better. Many people think of him as one of the greatest inventors.
Thomas Alva Edison was born on February 11, 1847. Alva did not do well in school. He always had a lot of questions and liked to explore them. At that time, school was mostly about remembering facts. Alva's mum took him out of school and taught him at home. She taught him to love to read.
Alva sold food and newspapers on trains when he was young. He used the money he earned to buy books and materials for experiments. He set up a lab in1876. Also around this time, Alva lost most of his hearing. He saved a boy from being struck by a runaway train. The child 's father offered to teach Alva how to be a telegraph(电报) operator.
As Alva grew older, he travelled around as a telegraph operator. He continued to be interested in science. Edison wanted to invent things full time.
The telephone was invented in 1876, but it didn't work well. In 1877, Edison and his team invented away to make the telephone work better. Edison also invented a machine that could record words and then play them back.
Edison continued to invent new things. During his life, Edison had l, 093 US patents (专利证书) in his name, as well as many patents in the United Kingdom, France, and Germany. He worked until he was more than eighty years old.
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Thomas Alva Edison was a great . He loved to learn how things worked and make things work better. But Alva did not do well in school. Then he left school and was by his mother instead. He set up a lab in 1876. Also around this time, he suffered from problems. In 1877, Edison and his team improved the and made it work better. Edison also invented a machine that could record words and then play them back. During his life, Edison had 1, 093patents in the and many patents in other countries.
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