Unit 7 Section Al Language Focus Words in Use 1.It was essential to (harness) science and technology, not just for the economy but for environmental protection as well.2.Language is the (symbolic) representation of a people, and it combines their historical and cultural backgrounds, as well as their approach to life.3.Because of the effective and helpful method, I was (disposed) to answer all the questions I could, and I never worried about making mistakes.4.It can be inferr
