◎ 题干
Judging from his face_______ there was a confident smile, we knew that he didn't lose heart.  
[     ]
A. in which          
B. from which                  
C. by which          
D. on which
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Judging from his face_______ there was a confident smile, we knew that he didn't lose heart. [ ]A. in whichB. from whichC. by which D. on which…”主要考查了你对  【关系代词】【介词和介词短语】【限制性定语从句】  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。