【单选题】If a child is bitten or startled several times by a dog, he may learn to associate furry (有毛皮的) animals with pain or startle and thus develop a fear of furry animals. This is a typical example of lear...
【单选题】If a child is bitten or startled several times by a dog, he may learn to associate furry animals with pain or startle and thus develop a fear of furry animals. This is a typical example of learning th...