A、In Maryland. B、In Virginia. C、In California. D、In Atlanta. A

As weather cools across the United States, a growing number of Americans visit farms. They harvest apples, enjoy hay wagon rides, and walk in the fields. These people are called "agri-tourists." They improve the economy of rural areas and help farmers increase their profits.
School children are walking in a corn field maze. The corn is cut into tricky passageways that make it difficult to find a way out. The children are from Yorktown Elementary School in Bowie Maryland. They are on the farm owned by Mike Dunn. The farm is in Maryland, about 40 kilometers from the White House.
Debbie Pierson is the student’s teacher. "We go on these kinds of field trips so that the children will have a hands-on experience of what it’s like to be on a farm," Pierson said.
When Mike Dunn opened the family farm to agri-tourists in 2008, he had only a corn maze, a pumpkin field and hay wagon rides. But he says, so many people visited that he soon increased the number of activities. He says he hopes he will someday make a larger profit from visitors than from farming.
5.  What could the agri-tourists bring about?      
6.  Where is Mike Dunn’s farm?      
7.  What does Mike Dunn hope to do?