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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 881

_______, the disease diphtheria would produce a powerful poison that would kill the paient.

A.If untreated B.If it untreated C.To be untreated D.If being untreated
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,thediseasediphtheriawouldprod