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【题目】 Not until all the fish died in the river, ____ how serious the pollution was.

A. did the villagers realizeB. the villagers realized

C. the villagers did realizeD. didn’t the villagers realize

【答案】A

【解析】

考查倒装。句意:直到河里的鱼都死了,村民才意识到污染有多么严重。not until位于句首时,采用部分倒装,即:助动词+(主句)主语+谓语,故A项正确。

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