How can I write with the teacher's fighting spirit?

A teacher in the philosophy department took only one question in the mid-term exam. The topic is like this: "What is courage?" Just as everyone was trying to figure out how to write, a classmate handed in his paper. But he only wrote five words: "This is courage."

The final exam is coming, and the teacher still only takes one question. The topic this time is: "This is the topic, please answer." I can't write yet. However, the students handed in their papers soon. He wrote, "This is the answer, please give points!" "

The teacher shouted angrily, "come here, I have two questions for you." After answering the first question, you don't have to answer the second question. "

Teacher: "How many hairs do you have?"

Classmate: "123,601."

Teacher: "How do you know?"

Classmate: "This is the second question. You don't need to answer this question. "