最先进的自行火炮美国“十字军”155毫米自行榴弹炮的弹药有什么独特的特点（）
A.杀伤力大
B.发射的弹种数多
C.性能稳定
D.发射后不用管
参考答案：D
The policeman told me that I had passed the driving test and never in my life _______ so happy and excited.
A．I felt
B．did I feel
C．I had felt
D．had I felt
窃据要津 qiâ jù yào jÿn
