题目

Oil prices reacted sharply ________ news of the crisis in the Middle East. A．on                B．against          C．with          D．to   答案： D   react to...对……作出反应；回应。react on sth.对某事物有影响；react against反对；反抗；react with sth.与……起化学反应，皆不符合题意。  

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