TOEFL Listening: ETS-TOEFL听力机经 - DXLLW2H44C6Z8W5PP$

According to the professor, what were the benefits of glyphosate when it was first introduced? A. It was relatively inexpensive to produce. B. It was considered harmless to humans and animals. C. It could be used to control a wide variety of weeds. D. D.It disintegrated quickly after being applied to plants. E. It prevented weeds from developing a resistance to herbicides.