题目

为了同学们顺利进行考试，学校的考务安排非常细致。用广播播放考试指令，指令声是由发声装置产生的，以的形式通过传到同学们的耳朵中。 答案：【1】振动【2】波【3】空气---- What do you think of the lecture made yesterday?---- Excellent! _______ you missed such a wonderful lecture?A．How is it thatB．Why it was thatC．How was it that D．When was it that