Example 2: it’s difficult to answer. I should say “Maybe not”. With the development of modern society, more and more electrical apparatus（装置）have been invented and used in various fields. There’s no doubt that they have brought in convenience, comfort, which contributes to the improvement of the world. However, nowadays when we use the new technology, we may cause serious pollution to the earth. In the past, although the electrical apparatus were not widely used, human beings lived in a clean and pure environment. At present, people start to be more concerned with the environment around us. And in 50 years, people will make full use of some clean energies like solar or wind energy to produce more environmental-friendly apparatus（环境友好型装置）taking the place of the present ones.

Brief Comment: Example 1没有用“Yes”或“No。”回答，而是引用谚语导入分析凡事都有两面性。一方面，随着技术的发展，新的技术产品必然会取代旧的、过时的产品。另一方面，一些技术产品已经在我们的日常生活中发挥重要作用而不会被淘汰；Example 2开门见山, maybe一句画龙点睛，随着技术的发展，我们会利用越来越多的新洁净能 源，从而取代过时的、对环境有污染的能源。

新形态2021