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Nowhere in nature is aluminum found free, owing to its always______ with other e
Nowhere in nature is aluminum found free, owing to its always______ with other e
游客
2025-03-18
1
管理
问题
Nowhere in nature is aluminum found free, owing to its always______ with other elements, most commonly with oxygen.
选项
A、combined
B、having combined
C、combine
D、being combined
答案
D
解析
此题测试的是动词一ing形式与一ed形式的用法及区别。首先,考生应分析出owing to是介词短语,一般说来,介词后面是不能出现原形动词的,所以C是错的;其次,句中its是aluminum的所有格形式,在句中作combine的逻辑主语,与之关系是受动而不是施动,即“使之与其他元素结合”,所以B是错误的;再次,句中已给出always一词,说明总是存在的一种客观情况,故应选择D项being combined。owing to…with oxy—gen整个介词短语在句中作原因状语,如果换成从句,相当于since it is always com—bined with other elements,most commonly with oxygen,显而易见,D是唯一正确的答案。句意为:铝在大自然中从不处于游离状态,因为它总是与其他元素结合在一起,最常见的是与氧结合在一起。
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