1. Application of artificial intelligence in medical field: With the development of science and technology, the application of artificial intelligence in medical field is more and more extensive, such as the recommendation of disease diagnosis and treatment scheme. This topic can be deeply studied from the basic principle, development status and application in medical field of artificial intelligence.

2.5G Technology Impact: The popularization of 5G technology will have a far-reaching impact on all aspects of society, including communication, transportation, medical care, education and so on. This topic can be studied from the principle, development status and social impact of 5G technology.

3. Impact of climate change on agriculture: Climate change is a global concern, and its impact on agriculture is particularly serious. This topic can be studied from the causes, effects and coping strategies of climate change.

4. Data privacy protection: With the advent of the era of big data, data privacy protection has become an important issue. This topic can be studied from the definition, present situation and protection strategy of data privacy.

5. Application of blockchain technology: Blockchain technology is a new technology with a wide range of applications, such as finance, supply chain and copyright protection. This topic can be studied from the principle, development status and application cases of blockchain.

6. Application of deep learning in image recognition: Deep learning is an important branch of artificial intelligence and is widely used in image recognition and other fields. This topic can be studied from the aspects of the principle, development status and application in image recognition of deep learning.

7. Development of electric vehicles: With the improvement of environmental awareness, the development of electric vehicles has attracted more and more attention. This topic can be studied from the principle, development status and market prospect of electric vehicles.