【正确答案】 C

【答案解析】[听力原文]
The state of Kansas is called the "Bread Basket of America" because it ranks first in wheat growing and flour milling. That may have something to do with the fact that the majority of people in the state are engaged in farming. In addition, there are hundreds of cattle farms in western Kansas, some of which cover 50000 acres. The state is larger than most states, but rather it has a small population.
In pioneer days, many settlers passed through Kansas seeking rich land and gold farther west. Looking upon Kansas as a "useless waste land", they refused to settle there. However, when Kansas joined the Union in 1861 as a free state opposed to slave labor, the population began to increase. Finally, the railroads helped to attract settlers by selling them inexpensive land.

【正确答案】 D

【正确答案】 A