6.Our teacher always speaks slowly and clearly in class ______.

6.Our teacher always speaks slowly and clearly in class ______.
A. so as to be understood B. in order to have understood
C. so as to understand D. to understand
【答案】A
【解析】
【详解】考查固定搭配。句意：我们的老师在课堂上总是讲得慢而且清楚，以便被理解。so as to do sth＝in order to do sth为了做某事， Our teacher和 understand之间是动宾关系，即“老师被同学们理解”，使用不定式的被动语态。故选A。