药物的生物转化和排泄速度决定其()
A.副作用的多少
B.最大效应的高低
C.作用持续时间的长短
D.起效的快慢
E.后遗效应的大小
参考答案:C
___________ the city center, we saw a stone statue of about 10 meters in height.
A.Approaching
B.Approached
C.To approach
D.To be approached
综合性展览会要比专业性展览会容易招商