词典词库拼词范例测验

changed 测验

EN
    选择每个问题的最合适的答案。
  • 问题 1 :
  • Not long ago, it was difficult to produce photographs of tiny creatures with every part in focus. That’s because the lenses that are excellent at magnifying tiny subjects produce a narrow depth of field. A photo processing technique called focus stacking has _______ that.
    1. changing
    2. changes
    3. changed
    4. change
  • 问题 2 :
  • The species may be a relict of former stages of historical vegetation and landscape development resulting from past climate _______ (glacial and post- glacial periods).
    1. changing
    2. changes
    3. changed
    4. change
这个测验是动态生成的。欲了解更多测验,请刷新此页面。
明确性: 级别 1
12345678910
明确的    ➨     多用途
相关连结:
  1. en changed hands
0.182