TOEFL Listening: ETS-TOEFL听力机经 - _19U22F3Q4WHR131P$

What does the professor imply about Gorrie's work with tropical diseases? A. He misunderstood the cause of tropical diseases. B. His work led to important medical breakthroughs. C. His treatments were similar to those used by other doctors at that time. D. He was less interested in tropical diseases than in other kinds of disease.