单选题 When she was awake, she found that she was standing on ______ seemed to be a piece of stone.
  • [A] that
  • [B] which
  • [C] what
  • [D] it


【正确答案】 C
【答案解析】[考点] 宾语从句
[解析] 通读全句，不难发现该宾语从句仍缺主语，即空格处填入的词应充当从句的主语；经筛选，其余均不能用于引导宾语从句。