根据短文内容,判断句子正(T)误(F)。 Not So Stupid A man and a woman are sitting together in an airplane. They are on a long journey. The woman is a teacher. The man is a farmer. They sit for a while, then the farmer says, ' Let's do something to pass time. Let's ask each other riddles (谜语).' ' OK. If we don't know the answer to a riddle, we have to pay to each other. ' says the teacher. The farmer thinks about this for a while, then he says, ' That's not fair (公平). You're a teacher, you know more things than I do. So if you don't know the answer to a riddle you pay me $100. If I don't know the answer to a riddle, I'll pay you $50.' The teacher thinks about this, then she says, ' OK. That's fair. Who will go first? ' ' I will.' the farmer says, ' Here is my riddle. What has three legs when it walks, but only two legs when it flies? ' The teacher doesn't know the answer. She gives the farmer $100, then says, ' Tell me the answer.' ' I don't know, either.' The farmer says, and gives the teacher $50. ( ) 1. There isn't anything interesting in the long journey at first. ( ) 2. They will pay the same money if they can't answer the question. ( ) 3. It's not fair for the teacher and the farmer to pay the same money. ( ) 4. The teacher doesn't know the answer to the riddle, but the farmer knows it. ( ) 5. The farmer is very clever.