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单选

According to the passage, which of the following statements is TRUE?

  • A.Chokwe developed the app all by himself.
  • B.People can buy this app from the online store.
  • C.His mother' s car was once damaged over a pothole.
  • D.The app works by using the city's 911 call system.
试题出自试卷《2016年5月北京学位英语考试真题及答案》
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