单选题 Messages can easily be sent from one operator to another as long as they share the same data store,

【正确答案】 A

【答案解析】share“共有、共享、均有”；have也可解释为“有、持有”；而type意为“打字、测定(血型)类型”；email也可作动词“发送电子信件”；store“保存、贮藏”，故选A。