The all-purpose sentence at the beginning of the application is as follows:

1. In recent years, with the rapid development of economy, more and more cities have begun to rise, but the accompanying traffic Problems such as congestion and environmental pollution cannot be ignored.

2. In the current society, with the improvement of people's living standards, obesity has attracted more and more attention and has become an important factor threatening public health.

3. In the past period of time, food safety issues have occurred frequently, arousing widespread social concern. How to ensure food safety and safeguard consumer rights has become an urgent problem for us to solve.

4. With the acceleration of urbanization, the problems of urban planning and management have become increasingly prominent. How to maintain sustainable development and improve urban quality in the process of urbanization is a question we need to seriously consider.

5. Currently, with the popularization of the Internet, network security problems are becoming increasingly serious. How to ensure network security and maintain national security and social stability are challenges we must face.

6. In today's society, innovation is an important driving force for development. However, how to protect intellectual property rights while innovating and maintain a fair competitive market environment are issues we need to seriously consider.

7. Currently, with the acceleration of globalization and the improvement of my country's opening up to the outside world, transnational cooperation has become an important development trend in various countries. How to safeguard national interests and corporate rights and interests in transnational cooperation is a challenge we need to face.

8. In modern society, cultural soft power has become an important part of a country’s comprehensive strength. How to protect and inherit excellent traditional culture and promote cultural innovation and development are important issues that we need to pay attention to.

9. Currently, our country is in a critical period of transformation and upgrading. How to achieve sustainable development during economic transformation and improve the competitiveness of enterprises and people's living standards are issues we need to seriously consider.

10. In modern society, people's livelihood issues have attracted more and more attention. How to solve the most direct and practical interests of the people and improve people's livelihood is a question we need to seriously consider.

11. At present, my country's environmental pollution problem is becoming increasingly serious. How to protect the environment and improve environmental quality while developing the economy is a question we need to seriously consider.

12. In modern society, the problem of domestic violence has become increasingly prominent. How to effectively prevent and stop domestic violence and protect the legitimate rights and interests of women and children are important issues that we need to pay attention to.

13. Currently, our country is in a critical period of comprehensively deepening reform. How to promote social fairness and justice in the reform and improve the people's sense of gain and happiness is a question we need to seriously consider.

14. In modern society, the growth issues of adolescents have attracted more and more attention. How to create a good growth environment for teenagers and promote their healthy growth is a question we need to seriously consider.

15. Currently, our country is facing a serious problem of population aging. How to protect the rights and welfare of the elderly in an aging society and promote the harmonious and stable development of society is a question we need to seriously consider.