Choose the best answer to each question. Then check your answers.
1. Work in small groups. There have been many scientific and technological advances in the last hundred years. In your opinion, which have been the most useful? Why? What scientific and/or technological advances would you like to see in the future? Note down your ideas.
2. Explain your ideas to the class.
3. Listen to the other groups' ideas. Do any of them coincide with yours?
4. Discuss all the ideas and try to agree on the most useful ones (in the past and the future).