The OPEC has recently cut back production and the price of oil has been to $90 a barrel

问题补充：

The OPEC has recently cut back production and the price of oil has been to $90 a barrel (桶).

A. risen

B. raised

C. arisen

D. arose

答案：

A. risen

(答案→)B. raised

C. arisen

D. arose

解析：考查动词辨析。rise是不及物动词，上升；raise 及物动词，提高，举起；arise是不及物动词，出现；arose是arise的过去式。这里指石油输出国组织削减产量，是有的价格被提高到90美元一桶。故用B。