单选题 The disappearance of her paper has never been ______.
  • [A] counted for
  • [B] looked upon
  • [C] accounted for
  • [D] checked up


【正确答案】 C
【答案解析】短语动词辨析题。account for意为“解释；说明”。count for意为“值，计”；look upon意为“认为，看待”；check up意为“核实”。