【简答题】完形填空。 Once there was a grasshopper (蚱蜢), who was the best hopper (跳跃者) in the world. She taught other grasshoppers how to hop. Soon all grasshoppers were hopping well, so she felt very 1 . Then one da...
【简答题】A.They detect nerve impulses transmitted to a grasshopper's legs. B.They sense how far a grasshopper has jumped. C.They detect changes in air pressure. D.They help a grasshopper find food.