药物代谢动力学研究的重点是
A. 药物作用的产生过程
B. 药物作用的动态规律
C. 药物在体内的过程特别是血药浓度随时间变化的规律
D. 药物的毒性与血药浓度的关系
E. 药物作用强度随剂量.时间变化的规律
Doyou know the man ______is talking with your father?-Yes,he’s our headmaster.
A. he
B. who
C. which
D. whom
Isthis the river _____I can swim?
A. which
B. in which
C. that
D. the one
Thisis the best hotel in the city _____I know.
A. where
B. which
C. that
D. it