让兔子不睡觉的办法

Exchange the tortoise for the wolf

Teacher: Some students are becoming arrogant. Do you remember the story about race between the hare and the tortoise? Now，Jim, will you please tell us why the hare was defeated by the tortoise?

Jim: Because the hare fell asleep.

Teacher: Absolutely right! What should we do so that the hare won't fall asleep?

Jim: Exchange the tortoise for the wolf.