Humanfacialexpressionsdifferfromthoseofanimalsinthedegree------theycanbecontrolledonpurpose.A,withwhichB,towhichC,ofwhichD,forwhichB一楼和我想的一样。来个拥抱。可惜是错的。

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
B一楼和我想的一样。来个拥抱。可惜是错的。

Answer 1

选B是正确的.
首先句子是说,
人类面部表情和动物面部表情在某种程度上是不一样的,什么程度呢?于是they can be controlled on purpose做定语从句解释the degree,
也就是说the degree是先行词.
to a degree/to some degree,意思就是“在某种程度上”,当然表示特指时可以用to the degree.
我们做过的,这是07年重庆的高考题啦
至于你所误解的differ to,这是不完整的结构,应当是A differ from sth. to sth.
比如说,differ from individual to individual,就是说视个人情况不同而不同.
这个结构强加在这个句子中从意思上是解释不通的