The spokesman ________ that the president would visit China next week, which cleaned up all doubts．
A.concludedB.advisedC.demandedD.confirmed在线课程D
考查动词词义辨析。confirm确认；conclude结束；advise建议；demand要求。句意：新闻发言人确认了总统将于下周访问中国，这消除了一切怀疑。故只有D项符合题意。