2. 职称英语
  3. Air, which (it is) a mixture of elements oxygen and nitrogen (and compounds) wat

Air, which (it is) a mixture of elements oxygen and nitrogen (and compounds) wat

游客2024-01-05  44
问题 Air, which (it is) a mixture of elements oxygen and nitrogen (and compounds) water and carbon dioxide, also (contains) small quantities of (many other) substances.
选项 A、it is
B、and compounds
C、contains
D、many other
答案 A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3335153.html
相关试题推荐
随机试题
最新回复(0)