◎ 题干
The speaker _____ several other subjects in the course of his talk but mostly kept himself to the main topic.
A.held onB.worked outC.touched onD.kept out of
◎ 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 speaker _____ several other subjects in the course of his talk but mostly kept himself to the main topic.A.held onB.worked outC.touched onD.kept out of…”主要考查了你对  【动词短语】【动词】  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。