◎ 题干
Human facial expressions differ from those of animals in the degree             they can be controlled on
purpose.   
[     ]
A.with which    
B.to which    
C.of which      
D.for which
◎ 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“Human facial expressions differ from those of animals in the degree they can be controlled on purpose.[ ]A.with whichB.to whichC.of whichD.for 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。