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单选

The advantage of Post-Paid Billing is _________.

  • A.there are Family Shared Use Plans
  • B.there is no-obligation return and nothing to lose
  • C.there is no worry of using up or reloading minutes
  • D.there is a variety of phones to select
试题出自试卷《2014年天津专升本英语真题及答案》
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