ACCORDING TO THE PASSAGE, THE MISSISSIPPI RIVER WASA. ONE OF THE B...

10. According to the passage, the Mississippi River was

A. one of the boundaries of a region where new agricultural settlement took place

B. a major source of water for agricultural crops

C. the primary route by which agricultural crops were transported

D. a main source of power for most agricultural machinery

II. Choose one word whose stress pattern is different from the others (5p)