____twice a year, whether it is a car or a bus or a truck, is the rule that ever

题型：不详难度：来源：

____twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.

A．Examining

B．Examined

C．Being examined

D．Having been examined

答案

C

解析

本题易误选B。考查动名词的用法，名中whether it is a car…为让步状语从句，is 为系词，故少主语。A、B、C、D中只有C可作主语表被动。