【题目】–There is _______ on using mobile phones at the gas station.
--Do you mean talking on the mobile phone ________ at the gas station?
A. a ban; is banned B. ban; banned
C. a ban; banned D. ban; is banned
在线课程【答案】A
【解析】考查ban的用法：做名词用，ban是可数的，做动词是“禁止”，句意是：--有个关于在加油站禁止用手机的禁令。--你意思是说在加油站打手机是被禁止的吗？用A。