单选题 In any city, there are some telephone numbers to call {{U}}in case of{{/U}} emergency.
  • A. in the course of
  • B. in the event of
  • C. in the middle of
  • D. in the way of
【正确答案】 B
【答案解析】in case of：在发生……情况下(不要翻译为“万一”)；in the course of：在……期间；in the event of：在发生……的情况下；in the middle of：在……中间；in the way of：妨碍。