在政治学中，政治民主的基础除了（）和法制基础，社会自治。
A、经济基础
B、风俗习惯
C、社会认同
D、民众基础
参考答案：A
The mother walked into the room in order not to wake up her baby.[ ]
A. quickly
B. quietly
C. heavily
D. fast
----Listen! Is Kitty in the next room?
---- No, it ______ be Kitty. She has gone to Beijing.
A．may not
B．can’t
C．mustn’t
D．needn’t
