阅读理解

Mark Twain was travelling with one of his friends by train. His friends lost his wallet（钱包）and asked Twain to pay for his ticket. 

"But I don't have enough money to buy two tickets," Twain said.

His friend didn't know what to do.

"I have an idea," said Twain. "We can get on the train and when the conductor（售票员）comes to check the tickets, you can hide under my seat. " Later, however, when the conductor came, Twain gave him two tickets—one for his friend and one for himself. Then he explained in a loud voice, "My friend is a strange man. When he rides on a train, he doesn't like to sit on the seat. He likes to lie（躺）on the floor under the seat. " Of course everybody on the train looked at the poor man and laughed at him.