【题目】Most of us know we should cut down on fat, but knowing such things isn’t much help when it shopping and eating.
A. refers to B. speaks of
C. focuses on D. comes to
在线课程【答案】D
【解析】
试题分析：when it comes to (doing) sth.当涉及(做)某事的情况、事情或问题时；refer to参考, 提及；speak of说起；focus on注意, 聚焦于。