TOEFL Listening: ETS-TOEFL听力机经 - AIH8CQVM9138B07MP$

How did researchers react to new evidence about the diet of western sandpipers? A. The researchers were pleased to confirm an earlier hypothesis. B. The researchers were concerned that sandpipers were eating such large numbers of clams. C. The researchers were surprised to learn that sandpipers' main source of food was not what they had originally thought it was. D. The researchers were skeptical of the findings and requested additional research.