Question

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

Answer 1

B

解析:

to which引導定語從句；which指代先行詞animals,表示“對它們來說”；with which 意為“和……在一起”；of which 意為“其中”；for which 意為“為了”。