A:土地可以买卖
B:土地禁止买卖
C:农业水平提高
D:土地私有出现
满足条件a=4,b=32,A=45°的△ABC的个数是( )
四项基本原则是____,是我党、我们国家生成发展的____。
The baby stops _______ as soon as he ______ his mother coming into the room.