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【题目】Scientists should do something they can ____ this kind of virus from spreading into a wider area.

A.preventB.to preventC.preventingD.prevented

【答案】B

【解析】

句意:科学家应该做些什么来防止这种病毒扩散到更广泛的地区。

A. prevent阻止,动词原形,B. to prevent阻止,不定式结构,C. preventing阻止,动名词,D. prevented阻止,过去分词时。根据题干可知,这里是用to引导的不定式短语来表目的,故选B

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