题目

从方框中选出最佳选项完成对话, 有两项多余。Mike: Lucy, do you have a computer? Lucy: Mike: What do you often do on it? Lucy: I often visit websites and get some information for my homework.Mike: Lucy: No, never. I think playing computer games wastes(浪费)too much time. What about you, Mike? Do you havea computer? Mike: Yes. I think it's very interesting. Lucy: Oh, I usually send emails to my teachers.Mike: Do you chat with your friends on the Internet? Lucy: Yes. A. I like playing computer games. B. Do you play computer games? C. How do you do your homework on it?下列各组生物中代谢类型及细胞基本结构相同的一组是 [    ] A．硝化细菌和大肠肝菌 B．蓝藻和乳酸菌 C．菟丝子和兔D．小麦和团藻