In order to reduce the increasing prices of vegetables, the toll____ if a truck

题型：不详难度：来源：

In order to reduce the increasing prices of vegetables, the toll____ if a truck carrying them passes through a toll station．

A．has cancelled	B．is cancelled
C．was cancelled	D．had been cancelled

答案

B

解析

考察时态，句意：为了降低蔬菜价格，如果一辆装有蔬菜的卡车经过收费站，收费被取消了。可知该句叙述的是一个客观存在的事实，过去产生，今后还将进行下去的一个客观事实，故用一般现在时态。选B。