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.
