All sentences in all languages can be represented by constituent structure trees, and all have syntactic rules that determine the linear order of words and their ______ structure.
A、linear
B、hierarchical
C、constituent
D、syntactic
【正确答案】：B
【题目解析】：All sentences in all languages can be represented by constituent structure trees, and all have syntactic rules that determine the linear order of words and their hierarchical structure.