2. 外语
  3. Nowhere in nature is aluminum found free, owing to its always ______ with other elements, most commonly with oxygen.

Nowhere in nature is aluminum found free, owing to its always ______ with other elements, most commonly with oxygen.

admin2013-05-11  87
问题 Nowhere in nature is aluminum found free, owing to its always ______ with other elements, most commonly with oxygen.
选项 A、being combined
B、having combined
C、to combine
D、combined
答案A
解析 非谓语动词题。owing to是介词，后应接名词或动名词，所以排除选项C 和D  而根据题意，后面应该接被动语态形式，进而排除选项B
转载请注明原文地址:https://kaotiyun.com/show/2GQK777K
0

专业英语四级

相关试题推荐
随机试题
最新回复(0)