GMAT 考满分题库

It is possible that, like the Volkswagen, whose unchanging exterior over decades concealed many changes in its internal machinery, the evolution of many prehistoric microbes occurred with no significant modification to their sheaths.
  • Athe evolution of many prehistoric microbes occurred with no significant modification to their sheaths 分析该选项
  • Bthe evolution of many prehistoric microbes was occurring without significant modification of their sheaths 分析该选项
  • Cno significant modification was made to the sheaths of many prehistoric microbes as they were evolving 分析该选项
  • Dthe sheaths of many prehistoric microbes went without significant modification during their evolution 分析该选项
  • Emany prehistoric microbes evolved without significant modification of their sheaths 分析该选项
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正确答案: E

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