单选题Large quantities of infor

问题补充：

单选题Largequantitiesofinformation,aswellassometimelyhelp_____sincetheorganizationwasbuilt.A.has offeredB.had been offeredC.have been offeredD.is offered

答案：

C解析这题考查时态语态，时间是：since the organization was built . 所以用现在完成时，主语是as well as连接的，和前面的主语一致，前面的主语是：Large quantities of information和quantity的数一致，而且 是被提供，选 C。