◎ 题干
Book Three of Vocational English_____ 12 units.  
[     ]
A. is made of  
B. are made of    
C. is made up of  
D. are made up of
◎ 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“Book Three of Vocational English_____ 12 units.[ ]A. is made of B. are made ofC. is made up of D. are made up of…”主要考查了你对  【动词短语】【一般现在时的被动语态】  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。