【简答题】根据对话内容,从方框内选择合适的句子补全对话。(有两项多余) A. Who has gone there? B. When are you going there? C. I haven't been there, either. D. I've seen and learnt a lot there. E. What have you done for the holiday? F. Which...
【单选题】A customer database records the marital status of each customer, which is one of single, married, divorced, and widowed. What is the type of the "marital status" attribute?