Lessons in the Silent Way follow a sequence based on_____complex

Lessons in the Silent Way follow a sequence based on_____complexity, and new words and language structures are broken down into elements, with one element presented at a time.
A、lexical
B、grammatical
C、functional
D、situational
【正确答案】：B
【题目解析】：P208
沉默法的课堂教学按语法规则从易到难进行,新的词汇和语言结构被分成几部分,每次只讲一部分。