下列哪一选项效力等级最高（）。
A、宪法
B、法律
C、刑法
D、行政法
参考答案：A
防爆门应每（）检查维修一次。
A、3个月
B、6个月
C、12个月
We _____ the top of the mountain but for this awful weather. It rained all day. [ ]
A. will reach
B. would reach
C. have reached
D. would have reached
