◎ 题干

I don’t think the experiment is ______ failure, because it has provided us with _____ valuable experience for our future tests.
A.不填; 不填B.a; 不填C.a ; aD.不填; a
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“I don’t think the experiment is ______ failure, because it has provided us with _____ valuable experience for our future tests.A.不填; 不填B.a; 不填C.a ; aD…”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。