Which of the following most logically completes the argument?  _GRE真题机经搜索_gre真题题库_GRE真题题目解析

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A team of researchers has claimed that by drilling below the Earth’s surface, they have been able to recover microorganisms that inhabit depths where it was previously thought that no life existed. Although other microorganisms that were at first thought to have been recovered from these depths were later determined merely to have come from surface soil, that cannot be so in this
case, because ________.

第1 题

Which of the following most logically completes the argument? 

some of the microorganisms found by the researchers are incapable of living near the Earth’s surface  some of the microorganisms found by the researchers are known to inhabit the surface soil near the researchers’ drilling site  when drilling below the Earth’s surface, it is impossible to prevent contamination of the drill by surface-soil microorganisms it is difficult to keep microorganisms alive once they have been recovered from underneath the Earth’s surface  the drilling equipment used by the team of researchers was similar to drilling equipment used by most previous teams of researchers investigating life below the surface of the Earth

正确答案： A 耗时：

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当前版本由更新于2020-04-22 16:59:44 感谢由对此题目的解答所做出的贡献。

一个研究小组声称，通过在地球表面以下进行钻探，他们能够复原居住在以前认为没有生命的深度的微生物。尽管其他一些起初被认为是从这些深度中复原的微生物，后来确定仅来自表层土壤，但在这种情况下却并非如此，因为________。

答案：A。逻辑题。给原文的逻辑链条补上一环。

A选项被这些研究人员发现的某些微生物无法生活在表面附近。补上了“在这种情况下却并非如此”这一个链条。
B错，根据B得出的结论，与原文结论正好相反。
C错，contamination无关选项。
D错，无关选项。
E错，无关选项。

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