单选题But for the metal ca

问题补充：

单选题Butforthemetalcagetopulltheminerstosafety,theminersinChile____inlessthantwenty-fourhours.A.would not be rescuedB.would not have been rescuedC.would be rescuedD.would have been rescued

答案：

B解析这题考查虚拟语气的用法：but for“要不是”，相当于：if it had not been for…,主句要用与过去相反的虚拟语气，would have done，要不是金属笼子拉矿工到安全地方，在智利的矿工不能在不到二十四小时内获救。选B。