Human facial expressions differ from those of animals in the degreethey can be controlled on purpose

题目简介

Human facial expressions differ from those of animals in the degreethey can be controlled on purpose

题目详情

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
题型:单选题难度:中档来源:同步题

答案

B

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