◎ 题干
The professor devoted all his life ____the treatment of AIDS.
A to research           B.in researching C.to researching   D.at researching
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“The professor devoted all his life ____the treatment of AIDS.A to research B.in researchingC.to researching D.at researching…”主要考查了你对  【现在分词的被动式】【现在分词】【不定式的被动式】【过去分词】  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。