《2000年国际贸易术语解释通则》对贸易术语分类的标准是()
A、英文字母顺序
B、卖方承担义务大小
C、交货方式
D、交货地点
参考答案：B
—What is the most important for us to learn well as students?
—I think your teacher should ________ carefully in class?
A．be listened
B．listen to
C．be listening to
D．be listened to
用友报表系统中，录入关键字必须在( )状态下进行。
A．格式B．数据C．计算D．单元
