题目

阅读理解 Many parents have learned the hard way that what sounds like open communication is often the very thing that closes a youngster's ears and mouth. One common mistake is the Lecture, the long monologue that often starts with “When I was your age” Eighteen-year-old Kelly calls lectures “long, one-side discussions in which I don't say much.” Kids reflexively(条件反射地)shut down in the face of a lecture. Their eyes glaze over(呆滞),and they don't register any incoming information. Listen to 13-year-old Sarah describe her least favorite times with her mom and dad. “Fir –--Do you know where David is? I couldn’t find him anywhere.–--Well. He _____ have gone far ——his coat’s still here. A. shouldn’t           B. mustn’t             C. can’t               D. wouldn’t