Which of the following groups of words shows difference of synonyms in denotation?（）
A、extend—increase
B、homely—domestic
C、policeman—cop
D、sense—meaning
【正确答案】：A
【题目解析】：同义词在外延上的区别指同义词在意义的范围和强弱程度上有区别。如extend和increase都有“扩大”之意，但意义范围却不同。例：公司决定明年增加10%的销售量。此时应该用increase。而在例句”The owner of the restaurant is going to extend the kitchen by ten feet this year.”中（饭店老板打算今年把厨房扩大十英尺。）应该用extend。所以本题答案是A。Sense和meaning属于difference in application一类。policeman—cop和homely—domestic属于difference in connotation一类。
