Wang Daheng is a famous scientist in China. He has made outstanding contributions in optics, laser, aerospace and other fields. Wang Daheng was born in an intellectual family, and his father was a famous educator and writer. In such a family atmosphere, Wang Daheng received a good education from an early age and became interested in science and literature.
2. During his college years, Wang Daheng took part in the student movement and was arrested and imprisoned for it. In prison, he strengthened his belief and began to devote himself to the cause of communism. He also studied many theoretical works of Marxism-Leninism in prison, which laid a solid foundation for his later scientific research and political work.
3. In the early 1960s, Wang Daheng participated in the establishment of the Institute of Optics and Fine Mechanics of China Academy of Sciences. He held an important position in the institute and led many optical research projects. In these projects, he not only put forward new theories and methods, but also developed a series of important optical instruments and equipment.
Skills of learning pinyin
1. Mastering initials and finals: Pinyin consists of initials and finals, and you need to master the pronunciation of each initials and finals skillfully. You can practice your pronunciation by reading aloud repeatedly, listening to tapes or taking pinyin courses. Pinyin has some spelling rules, such as tone and nasal sound. Learning pinyin should pay attention to mastering these rules. You can deepen your understanding of spelling rules by practicing writing pinyin.
2, practice oral English: learning pinyin is not only to master writing, but also to master correct pronunciation and oral English. Oral English can be practiced by following, imitating and communicating with classmates. Learning Pinyin requires listening, reading and practicing more. You can listen to the tape, read after it, practice spelling and communicate with your classmates to deepen your understanding of pinyin.
3. Pay attention to memory: learning Pinyin requires memory, especially for beginners. You can deepen your memory by reading aloud, copying repeatedly and making cards repeatedly. Now there are many softwares for learning Pinyin, which can practice tests and improve learning efficiency. If you encounter difficulties in learning Pinyin, you can ask teachers, parents or classmates for help and solve the problem in time.