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题目
题型:不详难度:来源:
Aluminum isn’t found free in nature, owing to its always ____ with other elements, most commonly with oxygen.
A.being combined B.having combined
C.combine D.combined

答案
A
解析

试题分析:combine …with…与……结合;这里owing to中的to是介词,故它的后面应跟动名词,这里是its+动名词也就是动名词的复合结构。又因为its与combine之间是被动关系,故用being combined。句意:在自然界中发现的铝不是自己存在的,因为铝和其它元素结合在一起,通常情况下是和氧在一起。故选A。
点评:本题较难。不容置疑,高考将继续加强对非谓语动词的考查,试题的特征将继续呈现出“情景化”和“设问角度的多样化”的趋势,但试题的难度将会有所控制。
即学即练:______from other continents for millions of years, Australia has many plants and animals not found in any other country in the world.
 A. Being separated         B. Having separated
C. Having been separated  D. To be separated
解析:C。
核心考点
试题【Aluminum isn’t found free in nature, owing to its always ____ with other element】;主要考察你对现在分词等知识点的理解。[详细]
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