◎ 题干
A new educational CD-ROM _____ by Nancy has just come out.
[     ]
A. was designed
B. designed
C. designing
D. was designing
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“A new educational CD-ROM _____ by Nancy has just come out.[ ]A. was designed B. designed C. designing D. was designing …”主要考查了你对  【分词】  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。