借助于载体使非脂溶性药物由高浓度区域向低浓度区域转运，不需要能量
A．被动扩散B．主动转运C．膜孔转运D．促进扩散E．胞饮作用
参考答案：D
最常见的良性骨肿瘤为
A．软骨瘤
B．骨软骨瘤
C．骨化性纤维瘤
D．骨巨细胞瘤
E．骨瘤
The house I grew up _____ has been taken down and replaced by an office building. [ ]
A. init
B. in
C. in that
D. in which
