语法与词汇 12.In the airport, I could hear nothing except the roar of aircraft engines which ______ all other sounds.

A、 dwarfed
B、 diminished
C、 drowned
D、 devastated

【正确答案】 C

【答案解析】本题空格处是说飞机发动机的声音掩盖了所有其他的声音。C项“drown掩盖(噪音)”符合题意，如：The cheers of the audience drowned the professor’s voice．(听众的欢呼声淹没了这位教授的声音。)其他三项“dwarf使相形见绌；diminish减少，缩小；devastate毁灭，破坏”都不正确。