单选题 During the lecture I tried to ______ down the main points, but the professor used a ______ which I couldn't quite follow.

【正确答案】 D

【答案解析】句意：上课时，我想尽量记下重点内容，但是教授语速太快我有点跟不上。note down记下；记下来。tone(演讲、文章的)语气，调子。doodle心不在焉地乱写乱画。scribble潦草地书写；乱写。sketch草拟；速写。