Unit 1 Chemical Industry化学工业Before reading the text below, try to answer following question:1. When did the modern chemical industry start?2. Can you give a definition for the chemical industry?3. What are the contribution which the chemical industry has made to meet and satisfy our needs?4. Is the chemical industry capital- or labor-intensive? Why?1.Origins of the Chemical Industry Although the use of chemicals dates back to the ancient civilizations, the evol
