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 Q18. The demand far a given resource. will most likely decrease if the prices of substitute resources and complementary resources, respectively. Prices of substitute resources     Prices of complementary resources A.        Increase                         Increase B         Increase                         Decrease C         Decrease                        Increase D         Decrease                        Decrease A. Answer A B. Answer B C. Answer C D. Answer D  
 答案和详解如下: 
  
 Q18.   C    07Modular Level 1, Vol.2, pp.19-21         Study Session 4-13-a A decrease in the price of a substitute resource would induce producers to use the substitute resource, reducing demand for the resource in question. An increase in the price of a complementary resource would decrease demand for both resources. 
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