题目内容
8. As there was a power cut in the hospital,the surgeon had to the operation.
A. call for B. call on
C. call off D. call up
8. C call for意为"接(某人) ;取(某物) ;需要"; call on意为"号召,呼吁;邀请;拜访";call off 意为"取消";call up意为"召唤;使想起;提出;打电话"。
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