单选题 According to the latest report, consumer confidence ______ a breathtaking 15 points last month, to its lowest level in ten years.
  • A. soared
  • B. mutated
  • C. plummeted
  • D. fluctuated
【正确答案】 C
【答案解析】[解析] 各选项的意思为：soared(物价)飞涨，暴腾。mutated(使)变异，(使)突变。plummeted笔直掉下；骤然跌落。fluctuated波动，起伏，涨落。答案是C。