单选题 While she had the fever, she ______ for hours.
  • A. raved
  • B. sniggered
  • C. tittered
  • D. perforated
【正确答案】 A
【答案解析】rave胡言乱语；狂热赞扬。snigger-窃笑；暗笑。titter偷笑。perforate穿孔。