2010版商业汇票底纹采用（）。
A、浅黄色底纹
B、蓝色底纹
C、绿色底纹
D、蓝绿双色底纹
参考答案：D
I would have attended your birthday party last night but for the fact that it at that time．
A．was raining
B．would rain
C．had rained
D．had been raining
谁开创了断代的纪传体史书体例？
