◎ 题干
Although he talked half an hour, he couldn't give us a good ________ of the reason why he did it.
A.idea
B.explanation
C.sense
D.understanding
◎ 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“Although he talked half an hour, he couldn't give us a good ________ of the reason why he did it.A.ideaB.explanationC.senseD.understanding…”主要考查了你对  【可数名词及其单复数】【集合名词】【名词】  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。