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题目
题型:不详难度:来源:
Food safety is one of the problems      now all over the world.
A.discussedB.to be discussed
C.being discussedD.having been discussed

答案
C
解析

试题分析:考查分词做定语。本句中的动词discuss与名词problems之间构成被动关系,因为本句有now说明这个问题正在被讨论,用现在分词的被动语态。句意:现在食品安全是一个全世界都正在讨论的问题。故C正确。
点评::当分词做定语的时候,如果构成分词的动词与名词构成主动关系,就使用现在分词做定语;当二者构成被动关系,使用过去分词做定语。单独的一个分词做定语要放在名词的前面,分词短语做定语要放在分词的后面。
核心考点
试题【Food safety is one of the problems      now all over the world.A.discussedB.to b】;主要考察你对现在分词等知识点的理解。[详细]
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