Do you know where a mule comes from?
It is the child of a donkey and a horse.
Mules have strong muscles like horses, but they eat less, can work longer, and are gentler, like donkeys.
George Washington was the first person in the United States to own mules.
He had heard that mules made good farm animals and he contacted the US ambassador in Spain to ask about them.
In 1785, King Charles III of Spain sent Washington a male donkey as a gift.
That male donkey became the father of the mule industry in the US.
Every April, Maury County holds a Mule Day celebration.
Held in Columbia, Tennessee, Mule Day had its beginning as "Breeder's Day" in the 1840s.
Farmers and farm animal breeders would bring their animals to market every April to show, buy, and trade.
This was an important business before the days of tractors,
when many families made a living from farming and mules were used as work animals.
Eventually, tractors began to replace mules, making them less in demand.
A parade was added to Mule Day in 1934 to attract more people.
Over the years other activities have been added and today more than 200,000 people show up each year to watch and participate.
后来几年，骡子节有了更多的活动 。如今，超过二十万人来参加或者观看骡子节 。
If you visit the Mule Day celebrations,
you might see mule-driving contests, square dances, horse shows, or even tree-cutting competitions.
Questions 22 to 25 are based on the passage you have just heard.
Question 22: What does the speaker say about mules?
Question 23: What do we learn about the donkey which is said to be the father of the U.S. mule industry?
Question 24: What did farmers usually do on Mule Day in the 1840s?
Question 25: What made mules less in demand in America?