◎ 题干
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Every possible means _________.However, nothing can ______him dying of cancer.
A.has tried; stopB.have tried; keepC.has been tried; preventD.have been tried; prevent
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“.Every possible means _________.However, nothing can ______him dying of cancer.A.has tried; stopB.have tried; keepC.has been tried; preventD.have been trie…”主要考查了你对  【可数名词及其单复数】【动名词】【表语从句】【缩写与简写】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。