-- -- Efron, the biggest teen star in America right now,is travelling around the world ____ the third High School Musical film .

----It must be well received.

A．promote

B．promoting

C．promoted

D．being promoted

推进信息化的三项关键资源是______。

A．技术、组织管理、物质

B．物质、组织管理、人

C．技术、物质、人

D．技术、组织管理、人