题目

下列金属活动性最强的是（   ） A . Au B . Ag C . Cu D . Sn 答案：D口语应用：在下列横线上填入适当的话语，使对话、正确。（共5小题，每小题3分，满分15分） A: What can I do for you! B: Yes, please. 76                          . But what kind of flower shall I buy, roses or carnations（康乃馨）? She likes red roses best while today is Mother’s Day. A: I think carnations are more special and better today. They show happiness, sweetness and love. They are for mothers. B: All right. Can I have a look at those carnations? A: Sure. 77                           ? B: Red. A: What about these? B: Great. 78                           ? A: 30 yuan. B: OK, 79                           . Here is the money. A: Thank you. Here’s the change and a card from our shop to your mom. Best wishes to her! B: 80                            .