Unit 6 Foods and DrinksⅠ. Listen to the dialogues and choose the best answer to each question. 听对话，选择最佳答案。
阅读下列短文，从每题所给的四个选项（A、B、C和D）中选出最佳选项，并在答题卡上将该项涂黑。AHigh school and college are periods of ever-expanding responsibility for students.
