2. 外语
  3. Air, which (it is) a mixture of elements oxygen and nitrogen (and compounds) water and carbon dioxide, also (contains) small qua

Air, which (it is) a mixture of elements oxygen and nitrogen (and compounds) water and carbon dioxide, also (contains) small qua

admin2004-12-30  34
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://kaotiyun.com/show/k78O777K
0

托福（TOEFL）

相关试题推荐
随机试题
最新回复(0)