居住区规划的基本要求中，居住区道路网的形式不包括（）。
A.自由式
B.尽端式
C.混合式
D.规则式
参考答案：B
Although he has been studying abroad,his parents try to keep him ________ of what has happened at
home. [ ]
A. warned
B. said
C. reminded
D. informed
我国契税的纳税义务人为在我国境内出让土地、房屋权属的单位和个人。 ( )
