XP may contain more than just X. Phrases that are formed of more

XP may contain more than just X. Phrases that are formed of more than one word usually contain head, ______and complement
A、modifier
B、determiner
C、qualifier
D、specifie
【正确答案】：D
【题目解析】：“specifier”在这个上下文中是指用来修饰名词短语的词汇部分，用来进一步明确名词短语所指的具体事物。