问题
选择题
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
答案：B
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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：B