药物作用开始快慢取决于（）
A.药物的吸收过程
B.药物的消除过程
C.药物的转化过程
D.药物的光学异构体
E.药物的分布过程
参考答案：A
—When were you born?
—I was born __ January ,1987.[ ]
A. in
B. on
C. at
D. of
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