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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较难
  • 浏览 541

Experts have found that the disease will lead to a greater increase in the number of sufferers unless ________ seriously when the symptom first appears.

A.treated B.to be treated
C.being treated D.be treated
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Expertshavefoundthatthedisease