练习册

  • 练习册
  • 试题
    精英家教网 > 高中英语 > 题目详情
    ---European scientists announced that the speed of light isn’t the speed limit.  
    ---Perhaps it is the biggest challenge to Einstein’s Theory of Relativity. No one _____ any crack in his
    theory for more than a century.
    [     ]
    A. has found
    B. found
    C. had found
    D. would find
    C
    练习册系列答案
    年级 高中课程 年级 初中课程
    高一 高一免费课程推荐！ 初一 初一免费课程推荐！
    高二 高二免费课程推荐！ 初二 初二免费课程推荐！
    高三 高三免费课程推荐！ 初三 初三免费课程推荐！
    相关习题

    科目：高中英语 来源： 题型：单选题

    Paper making began in China and from there it _____ to North Africa and Europe


    1. A.
      sprang
    2. B.
      spilled
    3. C.
      carried
    4. D.
      spread

    查看答案和解析>>

    科目：高中英语 来源： 题型：单选题

    Lionel Messi ，      the record for the most goals in a calendar year, is considered the most talented football player in Europe


    1. A.
      set
    2. B.
      setting
    3. C.
      to set
    4. D.
      having set

    查看答案和解析>>

    科目：高中英语 来源： 题型：单选题

    It is reported that the United States uses    energy as the whole of Europe


    1. A.
      as twice
    2. B.
      twice much
    3. C.
      twice much as much
    4. D.
      twice as much

    查看答案和解析>>

    科目：高中英语 来源： 题型：单选题

    As the most frequently spoken language in the world, Chinese ________ in many schools in Europe


    1. A.
      is teaching
    2. B.
      is taught
    3. C.
      has taught
    4. D.
      teaches

    查看答案和解析>>

    科目：高中英语 来源： 题型：单选题

    Not for a moment ______ sightseeing while in Europe


    1. A.
      he has stopped
    2. B.
      he stops
    3. C.
      did he stop
    4. D.
      he did stop

    查看答案和解析>>

    同步练习册答案