单选题 At that time, many readers (found) (it) difficult (believing) what Jules Verne had written in his book (to be true).
  • A. found
  • B. it
  • C. believing
  • D. to be


【正确答案】 C
【答案解析】动词形式错误，应改为to believe。find it+adj+to do是固定结构，此处的不定式是 find的真正宾语，it是形式宾语。