单选题:The author uses the example of middleman to show_______.

题目内容:
The author uses the example of middleman to show_______. A.[ A ] market transactions are important in different countries
B.[ B ] dealers are needed in doing business
C.[ C ] middlemen can play great role in different transactions and different countries
D.[ D ] middlemen in different countries have different actions in business
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From the text we know that__________

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正确答案: (  )

正确答案: (  )A.[ A ] make B.[ B ] fit C.[ C ] take D.[ D ] leave

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