The speech by the mayor of Shanghai before the final voting for

The speech by the mayor of Shanghai before the final voting for Expo 2010 is strongly impressed ____ my memory.
A、to
B、over
C、by
D、on
【正确答案】：D
【题目解析】：【考点点击】本题考查 impress的法。【要点透析】 impress sb./sth. on one's' memory意为“给某人留下很深的印象”。