2. Helen Keller, an American woman writer, was blind from childhood. She studied Braille under the guidance of Sullivan, became a social activist when she grew up, actively gave speeches around the world, promoted the disabled, and finished the novel If I Have Three Days of Light.
3. The Curies set up a laboratory in the shabby morgue, discovered radium through painstaking research, and won the Nobel Prize in physics twice.
4. Tong Dizhou, a famous modern biologist in China, was ordered to drop out of school because of his comprehensive average score of 45 in middle school, but he insisted on cramming for the last minute and was among the best through one year's efforts. Later, when studying in Belgium, he completed the frog anatomy experiment that ordinary people could not complete.
5. Zhang Haidi, a famous contemporary woman writer, was paraplegic at the age of five due to an accident, but she persisted in self-study from primary school to university and was proficient in many languages.
6. Academician Wang Xuan, a professor at Peking University, devoted his life to the development and research in the field of information technology. Whenever and wherever, he always worked day and night, and he was still sorting out academic reports until his death.