战勤保障消防站要求车位数（）个。
A.6～8
B.3～5
C.9～12
D.6～12
参考答案：C
单室模型静脉注射给药后体内血药浓度随时间变化的关系式为（）.
A.A
B.B
C.C
D.D
E.E
Your advice ________ very good. I’d like to have a try.
A．feels
B．sounds
C．tastes
D．smells
