单项选择题

A. They made farmers more independent.
B. They decreased the power of the railroads to control the prices of farm products.
C. They affected the prices that farmers could receive for their crops.
D. They strengthen world commercial ties.
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单项选择题
According to the writer, personal discoveries ______.
A. will give you one encouragement and direction
B. are helpful in finding the right information
C. are the most valuable part of one’s personal education
D. will help one to successfully complete school assignments
填空题
C
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