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Positing an enormous volcanic explosion at the end of the Permian period would explain the presence of a buried crater, account for the presence of the element iridium (originating deep within the earth), and the presence of quartz having been shattered by high-impact shock waves.
  • Aaccount for the presence of the element iridium (originating deep within the earth), and the presence of quartz having been 分析该选项
  • Bof the element iridium (originating deep within the earth), and of quartz 分析该选项
  • Cthe element iridium (originating deep within the earth), and explain the presence of quartz having been 分析该选项
  • Dthe presence of the element iridium (originating deep within the earth), and explain presence of quartz 分析该选项
  • Eexplain the element iridium (originating deep within the earth), and the presence of quartz 分析该选项
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正确答案: B
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题目基本信息

  • 所属科目:语法SC
  • 题目来源1:OG18-763
  • 正确率:50%
  • 难度:

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