【題目】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:科學家應該做些什么來防止這種病毒擴散到更廣泛的地區(qū)。

A. prevent阻止,動詞原形,B. to prevent阻止,不定式結構,C. preventing阻止,動名詞,D. prevented阻止,過去分詞時。根據(jù)題干可知,這里是用to引導的不定式短語來表目的,故選B。

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