評論
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Questions 9 to 12 are based on the passage you have just heard.
9
A.They had to work for landowners.
B.They led a self-sufficient life.
C.They had to trade for necessities.
D.They could use machines to work on land.
10
A.Farmers were more and more adept at planting crops.
B.Advanced machinery was vastly put into agricultural use.
C.Crop production decreased sharply due to economic depression.
D.Farmers went into college to study modem agricultural skills.
11
A.Weather plays the decisive part.
B.Banks and railroads dominate their life.
C.Government grants their crisis-free life.
D.Genetically modified crops are developed.
12
A.Railroads linked farmers to overseas markets.
B.Farmers now have to be concerned the way businessmen do.
C.Specialized crops brought farmers good and comfortable life.
D.President Thomas Jefferson ended farmers' free and simple life.
