托福口语 Task 4

Today, we're going to talk about a fascinating concept in animal behavior called 'cue-reward learning.' This is when animals learn to associate a specific signal, or cue, with a reward, and they adjust their behavior accordingly. The key point is that this learning is not just a simple reflex—it involves a mental connection between the cue and the outcome. Let me give you two examples from the wild. First, consider the honeybee. Bees learn to associate the color and pattern of flowers with the presence of nectar. When a bee finds a flower with abundant nectar, it remembers the visual cues—like the bright yellow color and the specific petal shape—and returns to similar flowers later. This speeds up foraging because the bee doesn't waste time on flowers with little or no nectar. Second, think about raccoons living near a river. They learn that the sound of a particular type of rustling in the leaves near the water often signals a crayfish. Over time, they associate that rustling sound with a tasty meal, so they immediately head toward the sound when they hear it, even before they see the crayfish. In both cases, the animals connect a cue—visual or auditory—to a reward, which helps them survive more efficiently.