TOEFL Listening: ETS-TOEFL听力机经 - KG1Q99F4HI5RDGD4P$

In the first study described, what were the scrub jays trained to do? A. Eat at a specific time each morning B. Eat a specific kind of food C. Form associations between specific times of day and specific kinds of food D. Form associations between specific locations and the availability of food