twice a year, whether it is a car, a bus or a truck, is the rule that every driver must

twice a year, whether it is a car, a bus or a truck, is the rule that every driver must obey in this city.
A. Examining
B. Examined
C. Having been examined
D. Being examined

A. ExaminingB. ExaminedC. Having been examined(答案→)D. Being examined解析：考查动名词做句子的主语。句意：五路是汽车，公交车还是卡车，两年被检查一次是这个城市里所以的司机都要遵守的规则。本题中的being examined是一个动名词的被动形式做句子的主语。故D项正确。

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