单选题 Many things ______ impossible in the past are common today.
  • A) to consider
  • B) considering
  • C) being considered
  • D) considered


【正确答案】 D
【答案解析】[解析] considered 为过去分词做定语．相当于which were considered。由于这里主谓之间是被动关系，故选D。