◎ 题干
— Do you know who designed the CD-ROM Around the World in Enight Hours?      
— Yes, It ______ by Nancy Jackson.
[     ]
A. has designed
B. designed
C. was designed
D. designs
◎ 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“— Do you know who designed the CD-ROM Around the World in Enight Hours?— Yes, It ______ by Nancy Jackson. [ ]A. has designed B. designedC. was designed D. …”主要考查了你对  【被动语态】  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。