Once, a bottle of white phosphorus was knocked down by a sudden vibration while the train was running. Phosphorus burns when it comes into contact with air. Many people came to put out the fire with Edison. The conductor was so angry that he threw all Edison's experiments out and slapped him hard that he was deaf in one ear.
Edison's determination to study science never wavered. He scrimped and saved, and started the chemical experiment again.
On one occasion, sulfuric acid burned his clothes; On another occasion, nitric acid almost blinded his eyes.
Undaunted by the danger, he still stubbornly did the experiment.
A few decades ago, there was a little girl named Manya in Poland. She was very absorbed in her study. No amount of noise around can distract her.
Once, while Manya was doing her homework, her sister and classmates sang, danced and played games in front of her. Manya didn't seem to see it, so she was absorbed in reading. My sister and classmates want to test her. They quietly set up some stools behind Manya, and whenever Manya moved, the stools would fall down. As time went by, Manya finished reading a book and the stool was still standing there. Since then, my sister and classmates have never made fun of her, and like Manya, they concentrate on reading and study hard. Manya became a great scientist when she grew up. She is Madame Curie.