单选题 I have never heard or seen such a thing______?
  • [A] did I
  • [B] haven't I
  • [C] do I
  • [D] have I


【正确答案】 D
【答案解析】考查反义疑问句的用法。注意到前半句是否定句，助动词是 have，所以选D。