为了实现大一统,汉武帝在思想上采取的措施是( )
A:大兴文字狱
B:“罢黜百家”
C:削弱诸侯国的势力
D:将铸币权和盐铁经营权收归中央
have Do does Is isn't has are am
下列不属于我国城市发展趋势的是( )