◎ 题干
—What's this in English?  
—__________.
[     ]
A. It's pen.    
B. It's a pen.    
C. No, it isn't.    
D. It pen 
◎ 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“—What's this in English? —__________.[ ]A. It's pen.B. It's a pen.C. No, it isn't.D. It pen…”主要考查了你对  【不定冠词(a,an)】【特殊疑问句】  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。