急淋白血病首选治疗药物是（）
A.VP
B.小剂量阿糖胞苷
C.HOAP
D.DA或HA
E.左旋门冬酰胺
参考答案：A
I often go to the English corner to have a free talk with my classmates ________I am busy. [ ]
A. except that
B. except for
C. except in
D. except
无机肥料有哪些？
