◎ 题干
While he was investigating ways to improve the telescope Newton made _______discovery which completely changed ____ man’s understanding of color.
a ,/     B. a ,the     C. /, the     D. the ,a
◎ 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“While he was investigating ways to improve the telescope Newton made _______discovery which completely changed ____ man’s understanding of color. a ,/ B. a ,t…”主要考查了你对  【不定冠词】【定冠词】【零冠词】  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。