江西省考博培训班

考博英语词汇语法模拟题

　　7. All the flights____because of the snowstorm, we had to take the train instead.
　　A.were canceled B. had been canceled C. having canceled D. having been canceled
　　8. Once ____, this power station will supply all the neighboring towns and villages with electricity.
　　A. it being completed B. it completed  C. completed D. it completes
　　9. He might have been killed ____the timely arrival of the ambulance.
　　A. but for B. except for C. besides D. except
　　7. D) 【句意】所有航班因暴风雪都被取消，我们不得不改乘火车。
　　【难点】该句的前半句使用的是独立结构由于动作发生在过去，所以根据题意要求，使用了完成式被动语态。
　　8. C) 【句意】这座电站一建成竣工，就将向周围城乡供电。
　　【难点】once在这里是连词，意为“一旦…就…”，后面省略了it is。[ZK)]
　9. A) 【句意】要不是救护车及时到达，他可能就没命了。
　　【难点】but for 意为“要不是”，它的典型使用就是在虚拟语气的句子中，所以正合题意。