The engineer has spent one year working in the US and discovered how things overseas.
A. manage
B. promote
C. operate
D. allocate
网友回答
A. manage
B. promote
(答案→)C. operate
D. allocate
解析：动词辨析。A管理；B提升，宣传；C运行；D分配。结合句意可知C正确。句意：那位工程师在美国工作了一年。发现了海外事情是如何运行的。故C正确。