Question

问一道英语题目

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
另外请麻烦告诉我一下这句话的意思，我在线等，谢谢

Answer 1

B to which
翻译：人和动物的面部表情不同之处在于根据自己的意图对表情的控制程度。
词组：to a(the) degree, 到某种程度
to which they can be controlled on purpose 这个从句修饰 degree, which 指代 the degree.

Answer 2

觉得选C，人类表情不同于动物之处在于其能一定程度上能被刻意控制

Answer 3

答案是B
自己意思是人类的面部表达和动物的不同之处在于他们能在多大程度上被刻意地控制。
如果还原成陈述句就是they can be controlled on purpose to which degree.
to which degree,在多大程度上.