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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:669

—Car prices have been going down sharply in the last 20 years.
—It's not surprising because the law of market ________ the price of a product.

A.is controlling B.controls
C.has controlled D.controlled
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—Carpriceshavebeengoingdownsha