与金融衍生产品相对应的基础金融产品可以是( )。
A．债券
B．股票
C．金融衍生工具
D．银行定期存款单
参考答案：A,B,C,D
All teachers received warmest congratulations on Teachers’ Day. They felt ________.
A．an honour that they were teachers
B．that they were teachers an honour
C．it an honour when they were teachers
D．it an honour that they were teachers
宋代两大民窑（）。
A.哥窑、龙泉窑
B.汝窑、定窑
C.定窑、建窑
D.磁州窑、吉州窑
