TOEFL Reading: ETS-TOEFL阅读机经 - 5V5M6V61ERAQ7B15L$

Which of the following can be inferred from paragraph 6 about the result of the expanding export economy? A. Some commercial relationships became less local and more impersonal. B. Farmers had a greater choice in the variety of crops to grow. C. The demand for agricultural surpluses was greater than the supply. D. The prices of local products decreased.