炮制品及其制剂应进行的卫生学检查包括（）
A.细菌总数
B.真菌总数
C.活螨
D.大肠埃希菌
E.沙门菌
参考答案：A, B, C, D, E
Victor apologized for ____ to inform me of the change in the plan. [ ]
A. his being not able
B. him not to be able
C. his not being able
D. him to be not able
下列哪种不是恶性肿瘤：（）
A.肾母细胞瘤
B.肝母细胞瘤
C.神经母细胞瘤
D.髓母细胞瘤
E.软骨母细胞瘤
