龙胆泻肝汤组成中不包含的药物是（）
A.泽泻
B.白芍
C.黄芩
D.栀子
E.车前子
参考答案：B
Only when I left my hometown ________ how precious it is to me. [ ]
A. did I realize
B. I realized
C. had I realized
D. I had realized
枝条是由哪部分发育而来的？[ ]
A．分生区细胞
B．叶片细胞
C．芽内的分生细胞
D．枝条上的分裂细胞
