Which organizational pattern would probably be most effective for arranging the main points of a speech with the specific purpose "To inform my audience about four of the world's greatest violin concertos"?
【单选题】听力原文:W: It's nearly 10 o'clock. Let's listen to the weather forecast. M: Here's the weather forecast. Fog is spreading from the east, and it'll affect all areas by midnight. It'll be heavy in some pla...