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  • 更新 2022-09-03
  • 科目 英语
  • 题型 单选题
  • 难度 较易
  • 浏览 915

Latest researches show children     with high levels of air pollution during their first
year of life run a greater risk of developing certain diseases.  

A.to be associated B.being associated
C.having been associated D.associated
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