TOEFL Listening: ETS-TOEFL听力机经 - LFDP263QJN9XYD65P$

What does the professor say about meteorites? A. They may have contributed to the disappearance of the Dorset. B. They provided a source of iron for the Dorset and the Thule. C. The Thule showed the Dorset where to locate them. D. The Dorset found them more often than the Thule did.