第24题: [单项选择]According to the latest report, consumer confidence______a breathtaking 15 points last month, to its lowest level in 9 years. A. soared B. mutated C. plummeted D. fluctuated 参考答案:C 答案解析:[解析] 本题空格处讲的是“上个月惊人地降了15点”。plummet意为“垂直下落”,如:The damaged aircraft plummeted down to earth.(损坏的飞机垂直坠落