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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:1595

Through thorough investigation, Dr. John Snow was finally able to prove that the outbreak of Cholera _____ people’s drinking of polluted water.

A.was close linked with B.closely linked to
C.was close connected with D.was closely linked with
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Through thorough investigation