单选题 The mayor didn't have time so far to go into it ______, but he gage as an idea about his plan.
  • A. in conclusion
  • B. at hand
  • C. at length
  • D. in turn


【正确答案】 C
【答案解析】[试题分析] 此题考查介词短语的用法。
[详细解答] at length此处意为“详尽地”，最符合题意。而at hand意为“在手边，即将到来”；in turn作“依次，轮流”讲；in conclusion意为“总之”。因此正确答案为C。