GMAT申友句子改错SC题库-【OG20-P787-769题】Travelers from Earth to Mars would have to endure low levels of gravity for long periods of time,-OG19新题-真题答案解析

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【OG20-P787-769题】

Travelers from Earth to Mars would have to endure low levels of gravity for long periods of time, avoiding large doses of radiation, plus contending with the chemically reactive Martian soil, and perhaps even ward off contamination by Martian life-forms.

A Mars would have to endure low levels of gravity for long periods of time avoiding large doses of radiation, plus contending

B Mars would have to endure low levels of gravity for long periods of time, avoid large doses of radiation, contend

C Mars, having to endure low levels of gravity for long periods of time, would also have to avoid large doses of radiation, plus contending

D Mars, having to endure low levels of gravity for long periods of time, avoid large doses of radiation, plus contend

E Mars, who would have to endure low levels of gravity for long periods of time avoid large doses of radiation, contend with

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答案：

选B. 主干是

Travelers would have to endure ..., avoiding ..., plus contending .., and ward off.逻辑为：旅行者从地球到火星将不得不忍受低重力，避免辐射，加上与化学反应的竞争，甚至可能阻止..的污染。原文4个动作平行，逻辑合理，但语法错误，plus不是连词，未划线部分的ward off和前面的contending，avoiding，endure不平行。 B项endure，avoid，content，ward off平行。 C项跳过having to endure，谓语接的是would also have to avoid ，改变逻辑，且和后面的ward off不平行。 D项同C，跳过having to,谓语改变，plus不是连词。 E项缺谓语，改变逻辑。