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   答案： B   to a degree有点，稍微。句意为：“人的面部表情与动物的不一样，他们可以故意地稍微控制一下。”  

查看本题答案和解析