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36. When was Edison born?

- Đáp án : B  in 1847 (The first sentence states:''Thomas Alva Edison was born in Ohio in 1847''.)

37.Where was Edison born?

- Đáp án : D in their basement (The passage mentions : ''Edison's parenta allowed him to set up a laboratory in their basement''.)

38. How many hours did the 1880 bulb last?

-Đáp án : B 1500 ( The passage states:''By the end of 1880, Edison had produced a bulb that lasted 1500 hours.'')

39. The word ''Self-educated'' in the passage mostly means__________
- Đáp án : C having taught himself ( The text notes he attended school for only afew things, but he was mostly selt- educated.)

40. What is the mani idea of the passage?

- Đáp án: A. A brief history of the light bulb ( While it mentions Edison's life the bulk of the text  focuses

on his research, experiments ,and the eventual successful production and marketing of the incandescent light bulb.)