TOEFL Listening: ETS-TOEFL听力机经 - 4VQ8B4B33KVP1OC3P$

What can be inferred about the phlogiston theory? A. It did not originate in Europe. B. It was the first theory proposed by modern chemists. C. It was based on data collected over a long period of time. D. It was widely accepted in Europe at one time.