for

Q: What's the difference between a monkey and a flea?
猴子和跳蚤有什么不同之处？
A: A monkey can have fleas, but a flea can't have monkeys.
猴子身上可以长跳蚤，而跳蚤身上不可以长猴子。

Q: How can you most irritate a farmer?
怎样最能激怒一个农民呢？
A: By treading on his corn?
踩踏他的谷物吗？

Q: Which is the strongest creature in the world?
世界上最强壮的动物是什么？
A: The snail. It carries its house on its back.
蜗牛。它把自己的房子背在身上。

Q: What do people do in a clock factory?
钟表厂的人都做些什么？
A: They make faces all day.
他们整天扮鬼脸。

Q: How do you stop a sleepwalker from walking in his sleep?
怎样让梦游者停止梦游呢？
A: Keep him awake.
让他保持清醒。