◎ 题干
We have made _______great progress in the medical field, but ______ progress we have made is not enough.
A.a; aB.a; theC./; theD./; /
◎ 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“We have made _______great progress in the medical field, but ______ progress we have made is not enough. A.a; aB.a; theC./; theD./; /…”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。