精选优质文档-倾情为你奉上Unit 1 The Roots of ChemistryI. Comprehension.1.It can be inferred from this article which one of the following items is not mainly based on practical use C. Greek chemistry 2. It was B. Empedocless who first introduced the idea that all things are not formed from just one element.3. In the development of Greek chemistry, D. Democritus was the first one definiting the ultimately constituents of matter?4. According to Plato, there are B. 4 “elements” whose faces
