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单选

Why is the nearest vending machine in American or Britain probably empty?

  • A.Thieves often steal from the machine.
  • B.Too many people are using the machine.
  • C.The machine is probably damaged by criminals.
  • D.The machine is not equipped with on-line monitoring.
试题出自试卷《2017年10月全国自主考试综合英语(一)真题及答案》
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