时辰药动学的研究不涉及的环节为（）
A．药物的吸收
B．药物的分布
C．药物的转运
D．药物的代谢
E．药物的排泄
参考答案：C
A: Your bicycle looks very nice. When did you buy it?
B: Oh, I ______ it for three months. It's a birthday present from my uncle. [ ]
A. bought
B. have bought
C. have received
D. have had
下列选项中，能够引起市场风险的有（）。
A.利
B.汇率
C.股票价格
D.产品价格变化
