交通量是指单位时间内通过道路某一地点或某一断面的车辆或(),前者称车流量,后者称人流量。
参考答案:行人
_____ that you didn't care about this matter at all, I should not have wasted my time explaining it to you. [ ]
A. Should I realize
B. Had I realized
C. If I realized
D. Did I realized
简述影响宏观税负的主要因素。