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Some Martian rock structures look strikingly like structures on Earth that are k
Some Martian rock structures look strikingly like structures on Earth that are k
游客
2024-09-06
48
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问题
Some Martian rock structures look strikingly like structures on Earth that are known____by microbes. (2017-18)
选项
A、having been created
B、being created
C、to have been created
D、to be created
答案
C
解析
考查不定式。be said/reported/believed/thought/known/reported后面可以接to do表示“将要做”,接be doing表示“正在做”,接have done意为“已经做完某事”。原句中are known后面接不定式是固定搭配,故排除选项A和B。因为微生物创造形成结构这一动作已经完成,时态用完成时,排除D。逻辑主语“结构”和动词“创造”是被动的关系,故本题答案为C。
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