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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 中等
  • 浏览 1211

these trials, people are ________assigned to a "treatment" group, which benefits from the project, and a "control" group, which does not.

A.initially B.conventionally
C.superbly D.randomly
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thesetrials,peopleareassignedt