开篇： Nowadays, with the development of economy and technology, …
结尾： In conclusion, …
Nowadays, with the development of economy and technology, the world has undergone tremendous changes. Nowadays, we have entered an era of rapid development.
With the continuous promotion of urbanization and industrialization, air pollution and water resource shortage have become more and more serious, which has attracted widespread attention from the society. We should take environmental issues seriously and protect our home planet.
Today, with the reform and opening up, our country’s economy is constantly developing, which is good news for everyone of us. I believe that in the near future, our society will become more prosperous.
In conclusion, we should take seriously the various problems facing modern society, starting from ourselves, and contribute our own strength to create a more harmonious and beautiful society.