【正确答案】 B、D

【答案解析】student： Hello, Mr. Black. After hearing Anna's presentation, I have some opinions about her presentation. teacher： Oh, what do you think of it? student： Frankly speaking, she has chosen a good topic, but there are some problems on the structure of this presentation. There isn't a distinction between the main ideas and the supporting details. teacher： Yeah, you are right. Anna should reorganize the structure. Then any other problems? student： En, I think some pictures inserted to the presentation are not necessary. Maybe Anna wants to make it look beautiful, but to go beyond is as wrong as to fall short. teacher： You are right. Anna should listen to your advice. Your comments are reasonable. student： Thank you, Madam. If I want to give some advice to Anna, what should I do? teacher： First you must send an email to her or talk with her face to face to ask if she wants to communicate with you. If she writes back to you and shows a willingness to talk with you, then you can write your suggestions on notes, and give them to her. student： I see. Thank you, Madam. I think I must have a talk with Anna.