阅读下面短文，并用英语回答问题(请注意每小题的词数要求)。
A man was driving along a rural road when he saw a three-legged chicken running next to his car. He was amused(逗笑) by this and watched as it ran along.
As he was driving, he realized that the chicken was running at about 50 km an hour. “That's a pretty fast chicken. I wonder how fast it can run!”
He drove faster than before and the chicken kept up with him, even at 70 km an hour. He sped up to 90 km an hour and the chicken was still right next to him.
Suddenly, the chicken turned off the road and ran down a long driveway, leading to a farmhouse. The man followed the chicken to the house and saw a man standing in the yard, as well as dozens of three-legged chickens.
The man in the car called out to the farmer, “How did you get all these three-legged chickens?”
The farmer replied, “I breed(饲养) them. You see, it's me, my wife, and my son living here, and we all like to eat chicken legs. Since chickens only have two legs, I started breeding this three-legged species(品种). In this way, we could have more chicken legs to eat.”
“That's amazing!” said the driver. Then he asked, “How do they taste?”
“We don't know,” said the farmer. “We can't catch any of them!”
1. What made the man laugh?(不超过 10 个词)

2. How fast could the chicken run at least according to the text?(不超过 5 个 )

3. Why did the farmer breed the three-legged chickens?(不超过 10 个词)

1.A three-legged chicken./A running chicken with three legs.
2.About 50 km an hour.
3.Because his family all like to eat chicken legs.