练习册

  • 练习册
  • 试题
    21．While flying.a batmakes a sound which hits things and comes back to its ears．In this way it's able to know the things are and avoid bumping into them．A．how B．where C．what D．which 【查看更多】

     

    题目列表(包括答案和解析)

    While flying，a bat（蝙蝠）makes a sound which hits things and comes back to its ears．In this way it's able to know           the things are and avoid bumping into them．

    A．how                    B．where                  C．what                      D．which

    查看答案和解析>>


    同步练习册答案